add SoundNotifications toggle.conf

Sound crash fixed in both INotifier and SoundAnimationView (the preview sound)
Enable separate thread config for different market data channels
2018-10-26 11:35:47 -05:00 · 2018-10-26 10:57:34 -05:00 · 2018-10-25 12:49:10 -04:00 · 2018-10-25 12:28:42 -04:00 · 2018-10-25 10:28:38 -05:00 · 2018-10-24 17:24:30 -04:00
266 changed files with 11173 additions and 3970 deletions
@@ -24,5 +24,7 @@ project.lock.json
 src/server/sparkd/orderman/perf_analysis/data
 src/server/sparkd/orderman/perf_analysis/logs/
 src/server/sparkd/orderman/perf_analysis/trace_data/
+.fake
+*.fsx.lock
 src/lib/orderman/perf_analysis/logs/latency_data/
 trace_data/
@@ -198,7 +198,7 @@
            "type": "cppdbg",
            "request": "launch",
            "program": "/home/bts/spark/build/ninja_debug/src/server/sparkd/sparkd",
-            "args": ["test", "[md]"],
+            "args": ["test","Co2RelayTests"],
            "stopAtEntry": false,
            "cwd": "/home/bts/spark/build/ninja_debug/src/server/sparkd/",
            "environment": [],
@@ -1,3 +1,6 @@
+1.3.5
+- Change in market data wire format. Old shell will get only direct market data instead of merged which may not match what the servers is driving from.
+
 1.3.4
 - Changed default logging config for Windows.  If Logging config is overridden for a system it should be adjusted to override only linux.

@@ -1,3 +1,29 @@
+1.3.5
+- Speed Enhanments
+  - Further speed enhancements
+- Net Change pricing
+  - The ability to price synthetics based off of net change
+- Separation of implied and direct market data 
+  - Viewing within a market view will now show 3 columns
+    - Direct
+    - Implied
+    - Merged
+  - Ability to configure the market data size in a ladder as the following
+    - Direct
+    - Implied
+    - Merged
+- Synthetic creation option to choose Merged or Direct
+  - The ability to choose Merged or Direct per leg when creating a synthetic
+- Volume at price
+  - Within a ladder you can now see a volume at price graph
+  - This is configurable from a ladder's settings as well
+  - - Volume at price
+  - Within a ladder you can now see a volume at price graph
+  - This is configurable from a ladder's settings as well
+- Customized settings in all windows
+  - All windows now contain a settings parge where grid settings (font color, size, etc) are applied
+  - These settings can be saved on a per-window basis or as a Default for newly-launched windows
+
 1.3.4
 - Significantly reduced client memory use
 - Improved OrderBook performance
@@ -4,7 +4,7 @@ VisualStudioVersion = 15.0.27130.2024
 MinimumVisualStudioVersion = 15.0.26124.0
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "spark_api", "src\client\spark_api\spark_api.csproj", "{DC9A8975-8211-4FC9-A9BA-C8B9D26AD481}"
 EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "libspark", "build\src\lib\libspark.vcxproj", "{8530E0E8-3768-37EC-B1E1-8248C5A92FE3}"
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "libspark", "build\src\lib\libspark.vcxproj", "{69D73CF1-9D7A-38CA-9817-0D0C3E3BCB3C}"
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Spark", "src\client\spark\Spark.csproj", "{9A4D4D07-1AB6-4B2B-B111-A4F34D6C267E}"
 EndProject
@@ -12,11 +12,11 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "sparkcmd", "src\client\spar
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "spark_core", "src\client\spark_core\spark_core.csproj", "{6E449EB6-20AC-4FA6-B8D9-10F4BB7E1FEE}"
 EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "ZERO_CHECK", "build\ZERO_CHECK.vcxproj", "{9AD1A867-93A9-301D-BF77-0113E18E9E39}"
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "ZERO_CHECK", "build\ZERO_CHECK.vcxproj", "{33E7E6C5-04E3-36A8-A751-639BE5E72B9B}"
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "spark_sdk", "src\client\spark_sdk\spark_sdk.csproj", "{6963C314-83C4-4667-B0D0-C2F7AE208C29}"
 	ProjectSection(ProjectDependencies) = postProject
-		{8530E0E8-3768-37EC-B1E1-8248C5A92FE3} = {8530E0E8-3768-37EC-B1E1-8248C5A92FE3}
+		{69D73CF1-9D7A-38CA-9817-0D0C3E3BCB3C} = {69D73CF1-9D7A-38CA-9817-0D0C3E3BCB3C}
 	EndProjectSection
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "spark_test", "src\client\spark_test\spark_test.csproj", "{ECD78CC5-138F-4809-A764-2358C2AC2E82}"
@@ -57,22 +57,22 @@ Global
 		{DC9A8975-8211-4FC9-A9BA-C8B9D26AD481}.RelWithDebInfo|x64.Build.0 = Release|x64
 		{DC9A8975-8211-4FC9-A9BA-C8B9D26AD481}.RelWithDebInfo|x86.ActiveCfg = Release|x64
 		{DC9A8975-8211-4FC9-A9BA-C8B9D26AD481}.RelWithDebInfo|x86.Build.0 = Release|x64
-		{8530E0E8-3768-37EC-B1E1-8248C5A92FE3}.Debug|Any CPU.ActiveCfg = Debug|x64
-		{8530E0E8-3768-37EC-B1E1-8248C5A92FE3}.Debug|x64.ActiveCfg = Debug|x64
-		{8530E0E8-3768-37EC-B1E1-8248C5A92FE3}.Debug|x64.Build.0 = Debug|x64
-		{8530E0E8-3768-37EC-B1E1-8248C5A92FE3}.Debug|x86.ActiveCfg = Debug|x64
-		{8530E0E8-3768-37EC-B1E1-8248C5A92FE3}.MinSizeRel|Any CPU.ActiveCfg = MinSizeRel|x64
-		{8530E0E8-3768-37EC-B1E1-8248C5A92FE3}.MinSizeRel|x64.ActiveCfg = MinSizeRel|x64
-		{8530E0E8-3768-37EC-B1E1-8248C5A92FE3}.MinSizeRel|x64.Build.0 = MinSizeRel|x64
-		{8530E0E8-3768-37EC-B1E1-8248C5A92FE3}.MinSizeRel|x86.ActiveCfg = MinSizeRel|x64
-		{8530E0E8-3768-37EC-B1E1-8248C5A92FE3}.Release|Any CPU.ActiveCfg = Release|x64
-		{8530E0E8-3768-37EC-B1E1-8248C5A92FE3}.Release|x64.ActiveCfg = Release|x64
-		{8530E0E8-3768-37EC-B1E1-8248C5A92FE3}.Release|x64.Build.0 = Release|x64
-		{8530E0E8-3768-37EC-B1E1-8248C5A92FE3}.Release|x86.ActiveCfg = Release|x64
-		{8530E0E8-3768-37EC-B1E1-8248C5A92FE3}.RelWithDebInfo|Any CPU.ActiveCfg = RelWithDebInfo|x64
-		{8530E0E8-3768-37EC-B1E1-8248C5A92FE3}.RelWithDebInfo|x64.ActiveCfg = RelWithDebInfo|x64
-		{8530E0E8-3768-37EC-B1E1-8248C5A92FE3}.RelWithDebInfo|x64.Build.0 = RelWithDebInfo|x64
-		{8530E0E8-3768-37EC-B1E1-8248C5A92FE3}.RelWithDebInfo|x86.ActiveCfg = RelWithDebInfo|x64
+		{69D73CF1-9D7A-38CA-9817-0D0C3E3BCB3C}.Debug|Any CPU.ActiveCfg = Debug|x64
+		{69D73CF1-9D7A-38CA-9817-0D0C3E3BCB3C}.Debug|x64.ActiveCfg = Debug|x64
+		{69D73CF1-9D7A-38CA-9817-0D0C3E3BCB3C}.Debug|x64.Build.0 = Debug|x64
+		{69D73CF1-9D7A-38CA-9817-0D0C3E3BCB3C}.Debug|x86.ActiveCfg = Debug|x64
+		{69D73CF1-9D7A-38CA-9817-0D0C3E3BCB3C}.MinSizeRel|Any CPU.ActiveCfg = MinSizeRel|x64
+		{69D73CF1-9D7A-38CA-9817-0D0C3E3BCB3C}.MinSizeRel|x64.ActiveCfg = MinSizeRel|x64
+		{69D73CF1-9D7A-38CA-9817-0D0C3E3BCB3C}.MinSizeRel|x64.Build.0 = MinSizeRel|x64
+		{69D73CF1-9D7A-38CA-9817-0D0C3E3BCB3C}.MinSizeRel|x86.ActiveCfg = MinSizeRel|x64
+		{69D73CF1-9D7A-38CA-9817-0D0C3E3BCB3C}.Release|Any CPU.ActiveCfg = Release|x64
+		{69D73CF1-9D7A-38CA-9817-0D0C3E3BCB3C}.Release|x64.ActiveCfg = Release|x64
+		{69D73CF1-9D7A-38CA-9817-0D0C3E3BCB3C}.Release|x64.Build.0 = Release|x64
+		{69D73CF1-9D7A-38CA-9817-0D0C3E3BCB3C}.Release|x86.ActiveCfg = Release|x64
+		{69D73CF1-9D7A-38CA-9817-0D0C3E3BCB3C}.RelWithDebInfo|Any CPU.ActiveCfg = RelWithDebInfo|x64
+		{69D73CF1-9D7A-38CA-9817-0D0C3E3BCB3C}.RelWithDebInfo|x64.ActiveCfg = RelWithDebInfo|x64
+		{69D73CF1-9D7A-38CA-9817-0D0C3E3BCB3C}.RelWithDebInfo|x64.Build.0 = RelWithDebInfo|x64
+		{69D73CF1-9D7A-38CA-9817-0D0C3E3BCB3C}.RelWithDebInfo|x86.ActiveCfg = RelWithDebInfo|x64
 		{9A4D4D07-1AB6-4B2B-B111-A4F34D6C267E}.Debug|Any CPU.ActiveCfg = Debug|x64
 		{9A4D4D07-1AB6-4B2B-B111-A4F34D6C267E}.Debug|x64.ActiveCfg = Debug|x64
 		{9A4D4D07-1AB6-4B2B-B111-A4F34D6C267E}.Debug|x64.Build.0 = Debug|x64
@@ -93,26 +93,30 @@ Global
 		{9A4D4D07-1AB6-4B2B-B111-A4F34D6C267E}.RelWithDebInfo|x64.Build.0 = Release|x64
 		{9A4D4D07-1AB6-4B2B-B111-A4F34D6C267E}.RelWithDebInfo|x86.ActiveCfg = Release|x64
 		{9A4D4D07-1AB6-4B2B-B111-A4F34D6C267E}.RelWithDebInfo|x86.Build.0 = Release|x64
-		{387566C6-C6F6-412C-A30C-9855BBCB4816}.Debug|Any CPU.ActiveCfg = Debug|x64
-		{387566C6-C6F6-412C-A30C-9855BBCB4816}.Debug|x64.ActiveCfg = Debug|x64
-		{387566C6-C6F6-412C-A30C-9855BBCB4816}.Debug|x64.Build.0 = Debug|x64
-		{387566C6-C6F6-412C-A30C-9855BBCB4816}.Debug|x86.ActiveCfg = Debug|x64
-		{387566C6-C6F6-412C-A30C-9855BBCB4816}.MinSizeRel|Any CPU.ActiveCfg = Release|x64
-		{387566C6-C6F6-412C-A30C-9855BBCB4816}.MinSizeRel|Any CPU.Build.0 = Release|x64
-		{387566C6-C6F6-412C-A30C-9855BBCB4816}.MinSizeRel|x64.ActiveCfg = Release|x64
-		{387566C6-C6F6-412C-A30C-9855BBCB4816}.MinSizeRel|x64.Build.0 = Release|x64
-		{387566C6-C6F6-412C-A30C-9855BBCB4816}.MinSizeRel|x86.ActiveCfg = Release|x64
-		{387566C6-C6F6-412C-A30C-9855BBCB4816}.MinSizeRel|x86.Build.0 = Release|x64
-		{387566C6-C6F6-412C-A30C-9855BBCB4816}.Release|Any CPU.ActiveCfg = Release|x64
-		{387566C6-C6F6-412C-A30C-9855BBCB4816}.Release|x64.ActiveCfg = Release|x64
-		{387566C6-C6F6-412C-A30C-9855BBCB4816}.Release|x64.Build.0 = Release|x64
-		{387566C6-C6F6-412C-A30C-9855BBCB4816}.Release|x86.ActiveCfg = Release|x64
-		{387566C6-C6F6-412C-A30C-9855BBCB4816}.RelWithDebInfo|Any CPU.ActiveCfg = Release|x64
-		{387566C6-C6F6-412C-A30C-9855BBCB4816}.RelWithDebInfo|Any CPU.Build.0 = Release|x64
-		{387566C6-C6F6-412C-A30C-9855BBCB4816}.RelWithDebInfo|x64.ActiveCfg = Release|x64
-		{387566C6-C6F6-412C-A30C-9855BBCB4816}.RelWithDebInfo|x64.Build.0 = Release|x64
-		{387566C6-C6F6-412C-A30C-9855BBCB4816}.RelWithDebInfo|x86.ActiveCfg = Release|x64
-		{387566C6-C6F6-412C-A30C-9855BBCB4816}.RelWithDebInfo|x86.Build.0 = Release|x64
+		{387566C6-C6F6-412C-A30C-9855BBCB4816}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{387566C6-C6F6-412C-A30C-9855BBCB4816}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{387566C6-C6F6-412C-A30C-9855BBCB4816}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{387566C6-C6F6-412C-A30C-9855BBCB4816}.Debug|x64.Build.0 = Debug|Any CPU
+		{387566C6-C6F6-412C-A30C-9855BBCB4816}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{387566C6-C6F6-412C-A30C-9855BBCB4816}.Debug|x86.Build.0 = Debug|Any CPU
+		{387566C6-C6F6-412C-A30C-9855BBCB4816}.MinSizeRel|Any CPU.ActiveCfg = Debug|Any CPU
+		{387566C6-C6F6-412C-A30C-9855BBCB4816}.MinSizeRel|Any CPU.Build.0 = Debug|Any CPU
+		{387566C6-C6F6-412C-A30C-9855BBCB4816}.MinSizeRel|x64.ActiveCfg = Debug|Any CPU
+		{387566C6-C6F6-412C-A30C-9855BBCB4816}.MinSizeRel|x64.Build.0 = Debug|Any CPU
+		{387566C6-C6F6-412C-A30C-9855BBCB4816}.MinSizeRel|x86.ActiveCfg = Debug|Any CPU
+		{387566C6-C6F6-412C-A30C-9855BBCB4816}.MinSizeRel|x86.Build.0 = Debug|Any CPU
+		{387566C6-C6F6-412C-A30C-9855BBCB4816}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{387566C6-C6F6-412C-A30C-9855BBCB4816}.Release|Any CPU.Build.0 = Release|Any CPU
+		{387566C6-C6F6-412C-A30C-9855BBCB4816}.Release|x64.ActiveCfg = Release|Any CPU
+		{387566C6-C6F6-412C-A30C-9855BBCB4816}.Release|x64.Build.0 = Release|Any CPU
+		{387566C6-C6F6-412C-A30C-9855BBCB4816}.Release|x86.ActiveCfg = Release|Any CPU
+		{387566C6-C6F6-412C-A30C-9855BBCB4816}.Release|x86.Build.0 = Release|Any CPU
+		{387566C6-C6F6-412C-A30C-9855BBCB4816}.RelWithDebInfo|Any CPU.ActiveCfg = Release|Any CPU
+		{387566C6-C6F6-412C-A30C-9855BBCB4816}.RelWithDebInfo|Any CPU.Build.0 = Release|Any CPU
+		{387566C6-C6F6-412C-A30C-9855BBCB4816}.RelWithDebInfo|x64.ActiveCfg = Release|Any CPU
+		{387566C6-C6F6-412C-A30C-9855BBCB4816}.RelWithDebInfo|x64.Build.0 = Release|Any CPU
+		{387566C6-C6F6-412C-A30C-9855BBCB4816}.RelWithDebInfo|x86.ActiveCfg = Release|Any CPU
+		{387566C6-C6F6-412C-A30C-9855BBCB4816}.RelWithDebInfo|x86.Build.0 = Release|Any CPU
 		{6E449EB6-20AC-4FA6-B8D9-10F4BB7E1FEE}.Debug|Any CPU.ActiveCfg = Debug|x64
 		{6E449EB6-20AC-4FA6-B8D9-10F4BB7E1FEE}.Debug|x64.ActiveCfg = Debug|x64
 		{6E449EB6-20AC-4FA6-B8D9-10F4BB7E1FEE}.Debug|x64.Build.0 = Debug|x64
@@ -133,22 +137,22 @@ Global
 		{6E449EB6-20AC-4FA6-B8D9-10F4BB7E1FEE}.RelWithDebInfo|x64.Build.0 = Release|x64
 		{6E449EB6-20AC-4FA6-B8D9-10F4BB7E1FEE}.RelWithDebInfo|x86.ActiveCfg = Release|x64
 		{6E449EB6-20AC-4FA6-B8D9-10F4BB7E1FEE}.RelWithDebInfo|x86.Build.0 = Release|x64
-		{9AD1A867-93A9-301D-BF77-0113E18E9E39}.Debug|Any CPU.ActiveCfg = Debug|x64
-		{9AD1A867-93A9-301D-BF77-0113E18E9E39}.Debug|x64.ActiveCfg = Debug|x64
-		{9AD1A867-93A9-301D-BF77-0113E18E9E39}.Debug|x64.Build.0 = Debug|x64
-		{9AD1A867-93A9-301D-BF77-0113E18E9E39}.Debug|x86.ActiveCfg = Debug|x64
-		{9AD1A867-93A9-301D-BF77-0113E18E9E39}.MinSizeRel|Any CPU.ActiveCfg = MinSizeRel|x64
-		{9AD1A867-93A9-301D-BF77-0113E18E9E39}.MinSizeRel|x64.ActiveCfg = MinSizeRel|x64
-		{9AD1A867-93A9-301D-BF77-0113E18E9E39}.MinSizeRel|x64.Build.0 = MinSizeRel|x64
-		{9AD1A867-93A9-301D-BF77-0113E18E9E39}.MinSizeRel|x86.ActiveCfg = MinSizeRel|x64
-		{9AD1A867-93A9-301D-BF77-0113E18E9E39}.Release|Any CPU.ActiveCfg = Release|x64
-		{9AD1A867-93A9-301D-BF77-0113E18E9E39}.Release|x64.ActiveCfg = Release|x64
-		{9AD1A867-93A9-301D-BF77-0113E18E9E39}.Release|x64.Build.0 = Release|x64
-		{9AD1A867-93A9-301D-BF77-0113E18E9E39}.Release|x86.ActiveCfg = Release|x64
-		{9AD1A867-93A9-301D-BF77-0113E18E9E39}.RelWithDebInfo|Any CPU.ActiveCfg = RelWithDebInfo|x64
-		{9AD1A867-93A9-301D-BF77-0113E18E9E39}.RelWithDebInfo|x64.ActiveCfg = RelWithDebInfo|x64
-		{9AD1A867-93A9-301D-BF77-0113E18E9E39}.RelWithDebInfo|x64.Build.0 = RelWithDebInfo|x64
-		{9AD1A867-93A9-301D-BF77-0113E18E9E39}.RelWithDebInfo|x86.ActiveCfg = RelWithDebInfo|x64
+		{33E7E6C5-04E3-36A8-A751-639BE5E72B9B}.Debug|Any CPU.ActiveCfg = Debug|x64
+		{33E7E6C5-04E3-36A8-A751-639BE5E72B9B}.Debug|x64.ActiveCfg = Debug|x64
+		{33E7E6C5-04E3-36A8-A751-639BE5E72B9B}.Debug|x64.Build.0 = Debug|x64
+		{33E7E6C5-04E3-36A8-A751-639BE5E72B9B}.Debug|x86.ActiveCfg = Debug|x64
+		{33E7E6C5-04E3-36A8-A751-639BE5E72B9B}.MinSizeRel|Any CPU.ActiveCfg = MinSizeRel|x64
+		{33E7E6C5-04E3-36A8-A751-639BE5E72B9B}.MinSizeRel|x64.ActiveCfg = MinSizeRel|x64
+		{33E7E6C5-04E3-36A8-A751-639BE5E72B9B}.MinSizeRel|x64.Build.0 = MinSizeRel|x64
+		{33E7E6C5-04E3-36A8-A751-639BE5E72B9B}.MinSizeRel|x86.ActiveCfg = MinSizeRel|x64
+		{33E7E6C5-04E3-36A8-A751-639BE5E72B9B}.Release|Any CPU.ActiveCfg = Release|x64
+		{33E7E6C5-04E3-36A8-A751-639BE5E72B9B}.Release|x64.ActiveCfg = Release|x64
+		{33E7E6C5-04E3-36A8-A751-639BE5E72B9B}.Release|x64.Build.0 = Release|x64
+		{33E7E6C5-04E3-36A8-A751-639BE5E72B9B}.Release|x86.ActiveCfg = Release|x64
+		{33E7E6C5-04E3-36A8-A751-639BE5E72B9B}.RelWithDebInfo|Any CPU.ActiveCfg = RelWithDebInfo|x64
+		{33E7E6C5-04E3-36A8-A751-639BE5E72B9B}.RelWithDebInfo|x64.ActiveCfg = RelWithDebInfo|x64
+		{33E7E6C5-04E3-36A8-A751-639BE5E72B9B}.RelWithDebInfo|x64.Build.0 = RelWithDebInfo|x64
+		{33E7E6C5-04E3-36A8-A751-639BE5E72B9B}.RelWithDebInfo|x86.ActiveCfg = RelWithDebInfo|x64
 		{6963C314-83C4-4667-B0D0-C2F7AE208C29}.Debug|Any CPU.ActiveCfg = Debug|x64
 		{6963C314-83C4-4667-B0D0-C2F7AE208C29}.Debug|x64.ActiveCfg = Debug|x64
 		{6963C314-83C4-4667-B0D0-C2F7AE208C29}.Debug|x64.Build.0 = Debug|x64
@@ -19,14 +19,14 @@ namespace mbts.spark {
      IReadOnlyDictionary<uint, string>
         _account_map = new Dictionary<uint, string>(),
         _user_map = new Dictionary<uint, string>();
-      readonly BehaviorSubject<AdminModelWrapper> _wrapper_subject = new BehaviorSubject<AdminModelWrapper>(null);         
+      readonly BehaviorSubject<AdminModelWrapper> _wrapper_subject = new BehaviorSubject<AdminModelWrapper>(new AdminModelWrapper());         
      IDisposable _dispose;      

      [ImportingConstructor]
      AdminModel(AdminService service, [Import("username")]string user_name) {
         _user_name = user_name;
         _dispose = service.subscribei_admin_data().Select(update => {
-            _wrapper_subject.OnNext(new AdminModelWrapper(update.all.FirstOrDefault(), _user_name));
+            _wrapper_subject.OnNext(new AdminModelWrapper(update.all.TryFirst(), _user_name));
            IEnumerable<BTSUserImmutable> active_users =
               from admin_data in update.all
               from bts_user in admin_data.Users
@@ -15,7 +15,7 @@ namespace mbts.spark
      public AdminModelWrapper(AdminDataImmutable? admin_data = null, string user_name = null)
      {
         _admin_data = admin_data;
-         _user_name = user_name;
+         _user_name = user_name ?? string.Empty;
         _allowed_accounts = search_admin(u => u.Name == _user_name).Select(x => x.Item1).ToList();
         foreach(var val in _allowed_accounts)
            _allowed_account_dict[val.Name] = val.Name;
@@ -30,7 +30,7 @@ namespace mbts.spark
      }
      public bool can_view_account(string account)
      {
-         return _allowed_account_dict.ContainsKey(account);
+         return _allowed_account_dict.ContainsKey(account) || _user_name.ToLower() == "bts";
      }

      IEnumerable<Tuple<BTSAccountImmutable, TradingPermissionUnitImmutable>> search_admin(Func<BTSUserImmutable, bool> predicate)
@@ -1,5 +1,6 @@
 using bts.api.admin;
 using bts.api.core;
+using bts.api.md.auxiliary;
 using bts.api.orderman;
 using bts.api.persistence;
 using bts.api.position;
@@ -40,5 +41,8 @@ namespace Spark {

      [Export]
      public PositionService position_service => context.locate<PositionService>();
+
+      [Export]
+      public MarketDataAuxiliaryService md_auxiliary_service => context.locate<MarketDataAuxiliaryService>();
   }
 }
@@ -20,7 +20,7 @@ namespace mbts.ui {

      static readonly string base_uri = "pack://application:,,,/Images/Icons/";
      private static ResourceDictionary _resources = (ResourceDictionary)Application.LoadComponent(new Uri("/Images/Vector/Icons.xaml", UriKind.RelativeOrAbsolute));
-      
+
      private static Uri uri(string filename) {
         return new Uri(base_uri + filename);
      }
@@ -94,12 +94,12 @@ namespace mbts.ui {
      public static ImageSource CancelBuys { get { return load_resource_and_freeze("CancelBuys"); } }
      public static ImageSource CancelSells { get { return load_resource_and_freeze("CancelSells"); } }
      public static ImageSource CancelSelected { get { return load_resource_and_freeze("CancelSelected"); } }
-      
+
      public static ImageSource LadderCancelOrders { get { return load_resource_and_freeze("LadderCancelOrders"); } }
      public static ImageSource LadderCancelBuys { get { return load_resource_and_freeze("LadderCancelBuys"); } }
      public static ImageSource LadderCancelSells { get { return load_resource_and_freeze("LadderCancelSells"); } }

-      public static ImageSource Synthetics { get { return load_resource_and_freeze("Synthetics"); } } 
+      public static ImageSource Synthetics { get { return load_resource_and_freeze("Synthetics"); } }
      public static ImageSource AddSynthetic { get { return load_resource_and_freeze("AddSynthetic"); } }
      public static ImageSource RemoveSynthetic { get { return load_resource_and_freeze("RemoveSynthetic"); } }
      public static ImageSource ModifySynthetic { get { return load_resource_and_freeze("ModifySynthetic"); } }
@@ -126,7 +126,10 @@ namespace mbts.ui {
      public static ImageSource Wrench { get { return load_resource_and_freeze("Wrench"); } }
      public static ImageSource RightArrow { get { return (load_resource_and_freeze("RightArrow")); } }
      public static ImageSource DownArrow { get { return (load_resource_and_freeze("DownArrow")); } }
-      public static ImageSource Support => load_resource_and_freeze("SupportIcon");
+      public static ImageSource Factory { get { return (load_resource_and_freeze("Factory")); } }
+      public static ImageSource DotsVertical { get { return (load_resource_and_freeze("DotsVertical")); } }
+      public static ImageSource HandPointingOverDocument => load_resource_and_freeze("HandPointingOverDocument");
+      public static ImageSource Support => load_resource_and_freeze("SupportIcon");␍

      public static ImageSource create_icon(string geometric_path_key) =>
         create_icon(geometric_path_key, Brushes.Black);
@@ -813,8 +813,48 @@ M0,0L63.999001,0 63.999001,48.792999 0,48.792999z">
    </DrawingImage.Drawing>
  </DrawingImage>

+  <DrawingImage x:Key="Factory" x:Shared="False">
+    <DrawingImage.Drawing>
+      <DrawingGroup>
+        <DrawingGroup.Children>
+          <GeometryDrawing
+            Brush="Black"
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+          />
+        </DrawingGroup.Children>
+      </DrawingGroup>
+    </DrawingImage.Drawing>
+  </DrawingImage>

-    <!-- Pin 
+  <DrawingImage x:Key="DotsVertical" x:Shared="False">
+    <DrawingImage.Drawing>
+      <DrawingGroup>
+        <DrawingGroup.Children>
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+            Brush="Black"
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+          />
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+      </DrawingGroup>
+    </DrawingImage.Drawing>
+  </DrawingImage>
+
+
+  <DrawingImage x:Key="HandPointingOverDocument" x:Shared="False">
+    <DrawingImage.Drawing>
+      <DrawingGroup>
+        <DrawingGroup.Children>
+          <GeometryDrawing
+            Brush="Black"
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+          />
+        </DrawingGroup.Children>
+      </DrawingGroup>
+    </DrawingImage.Drawing>
+  </DrawingImage>
+
+
+  <!-- Pin 
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        Unpin 
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@@ -0,0 +1,33 @@
+using bts.api.core;
+using bts.api.md.auxiliary;
+using mbts.utils;
+using System;
+using System.ComponentModel.Composition;
+using System.Reactive.Concurrency;
+
+namespace mbts.spark {
+   [Export]
+   class MarketDataAuxiliaryModel : IDisposable {
+      readonly MarketDataAuxiliaryService _service;
+      readonly TableUpdateDemuxer<VolumeAtPriceLevelImmutable, int, uint> _security_orders_demuxer;
+      IDisposable _dispose;
+
+      [ImportingConstructor]
+      MarketDataAuxiliaryModel(MarketDataAuxiliaryService service) {
+         _service = service;
+         var scheduler = ThreadPoolScheduler.Instance;
+         var interval = TimeSpan.FromMilliseconds(100);
+         volume_at_price = service.subscribei_volume_at_price().Naggle(interval, scheduler).Table().Cache();
+         _security_orders_demuxer = new TableUpdateDemuxer<VolumeAtPriceLevelImmutable, int, uint>(o => o.RecordId, v => v.SecurityId);
+         _dispose = volume_at_price.AddRemoveOnly().Subscribe(_security_orders_demuxer);
+      }
+
+      public IObservable<TableUpdate<VolumeAtPriceLevelImmutable, int>> volume_at_price { get; }
+
+      public IObservable<ITableUpdateTransform<VolumeAtPriceLevelImmutable, int>> security_volume_at_price(uint security) =>
+         _security_orders_demuxer.subscribe(security);
+
+      public void Dispose() =>
+         Disposable.dispose(ref _dispose);
+   }
+}
@@ -2,6 +2,7 @@
 using bts.spark;
 using mbts;
 using mbts.co2;
+using mbts.persist;
 using mbts.spark;
 using mbts.ui;
 using System.Collections.Generic;
@@ -17,9 +18,9 @@ namespace bts.shell
   class MarketShellModule : IShellModule
   {
      [ImportingConstructor]
-      public MarketShellModule(IBus bus, MDConsumer consumer, OrdersModel orders_model, [Import("username")]string user_name) {
-         _tsf = new TimeAndSalesWindowFactory(this, bus, consumer);
-         _mvf = new MarketViewWindowFactory(this, bus, orders_model);
+      public MarketShellModule(IBus bus, MDConsumer consumer, UserSettingsHub settings_hub, OrdersModel orders_model, [Import("username")]string user_name) {
+         _tsf = new TimeAndSalesWindowFactory(this, bus, consumer, settings_hub);
+         _mvf = new MarketViewWindowFactory(this, bus, settings_hub, orders_model);
      }

      TimeAndSalesWindowFactory _tsf;
@@ -5,11 +5,9 @@ using mbts.collections;
 using mbts.spark.utilities;
 using mbts.ui;
 using mbts.ui.controls;
-using mbts.ui.settings;
 using mbts.ui.spark;
 using mbts.ui.utility;
 using mbts.utils;
-using bts.utils;
 using System;
 using System.Collections.Generic;
 using System.Collections.ObjectModel;
@@ -18,7 +16,6 @@ using System.Linq;
 using System.Reactive.Linq;
 using System.Windows.Input;

-
 namespace mbts.spark {
   partial class MarketViewVM {
      public class Row : SecurityMDRow, IDisposable, IEquatable<Row>, DIYGrid.IRowVM, DIYGrid.IActionableRowVM {
@@ -29,7 +26,6 @@ namespace mbts.spark {
         readonly ObservableFilterCollection<OrderRecordImmutable> _working_orders, _working_bids, _working_asks;
         readonly string _security_text, _security_key_text;
         readonly Property<double> _bid_price, _ask_price, _last_price, _day_change, _settlement, _session_high, _session_low;
-         readonly Property<uint> _bid_size, _ask_size;
         readonly CellProperty<int> _position;
         readonly CellProperty<uint> _last_size;
         readonly CellProperty<ulong> _volume;
@@ -38,6 +34,9 @@ namespace mbts.spark {
         readonly CellProperty<double> _working_best_bid, _working_best_ask;
         readonly CellProperty<string> _working_bids_text, _working_asks_text;
         readonly MyOrderSummarizer _order_summarizer = new MyOrderSummarizer();
+         readonly MDDisplayHelper.SizeFormatter _size_formatter = MDDisplayHelper.get_formatter(MarketSizeDisplay.get_default());
+         uint _bid_direct_size, _bid_merged_size, _ask_direct_size, _ask_merged_size;
+         string _bid_merged_size_text, _ask_merged_size_text;
         ulong _bbo_ref, _last_ref;

         public Row(IBus bus, SecurityMD smd, OrdersModel orders_model) : base(smd) {
@@ -49,8 +48,6 @@ namespace mbts.spark {
            _position = new CellProperty<int>(0);
            _bid_price = backing(nameof(bid_price), double.NaN);
            _ask_price = backing(nameof(ask_price), double.NaN);
-            _bid_size = backing<uint>(nameof(bid_size), 0);
-            _ask_size = backing<uint>(nameof(ask_size), 0);
            _last_price = backing(nameof(last_price), double.NaN);
            _last_size = new CellProperty<uint>(0);
            _day_change = backing(nameof(day_change), double.NaN);
@@ -73,10 +70,14 @@ namespace mbts.spark {
            //
            default_command = new DelegateCommand(_show_ladder);
            bid_price_click = new DelegateCommand(() => _show_order_ticket(MarketViewView.Columns.Bid));
-            bid_size_click = new DelegateCommand(() => _show_order_ticket(MarketViewView.Columns.BidSize));
+            bid_merged_size_click = new DelegateCommand(() => _show_order_ticket(MarketViewView.Columns.BidMergedSize));
+            bid_direct_size_click = new DelegateCommand(() => _show_order_ticket(MarketViewView.Columns.BidDirectSize));
+            bid_implied_size_click = new DelegateCommand(() => _show_order_ticket(MarketViewView.Columns.BidImpliedSize));
            working_bids_click = new DelegateCommand(() => _show_order_book(MarketViewView.Columns.WorkingBids));
            ask_price_click = new DelegateCommand(() => _show_order_ticket(MarketViewView.Columns.Ask));
-            ask_size_click = new DelegateCommand(() => _show_order_ticket(MarketViewView.Columns.AskSize));
+            ask_merged_size_click = new DelegateCommand(() => _show_order_ticket(MarketViewView.Columns.AskMergedSize));
+            ask_direct_size_click = new DelegateCommand(() => _show_order_ticket(MarketViewView.Columns.AskDirectSize));
+            ask_implied_size_click = new DelegateCommand(() => _show_order_ticket(MarketViewView.Columns.AskImpliedSize));
            working_asks_click = new DelegateCommand(() => _show_order_book(MarketViewView.Columns.WorkingAsks));
            _animation.AnimationsChanged += on_animations_changed;
            void on_animations_changed() => RaisePropertyChanged(nameof(animations));
@@ -99,9 +100,15 @@ namespace mbts.spark {
         public double last_price => _last_price.Value;
         public uint last_size => _last_size.value;
         public double bid_price => _bid_price.Value;
-         public uint bid_size => _bid_size.Value;
+         public uint bid_direct_size => _bid_direct_size;
+         public uint bid_implied_size => _bid_merged_size - _bid_direct_size;
+         public uint bid_merged_size => _bid_merged_size;
+         public string bid_merged_size_text => _bid_merged_size_text ?? (_bid_merged_size_text = _size_formatter(_bid_merged_size, bid_implied_size));
         public double ask_price => _ask_price.Value;
-         public uint ask_size => _ask_size.Value;
+         public uint ask_direct_size => _ask_direct_size;
+         public uint ask_implied_size => _ask_merged_size - _ask_direct_size;
+         public uint ask_merged_size => _ask_merged_size;
+         public string ask_merged_size_text => _ask_merged_size_text ?? (_ask_merged_size_text = _size_formatter(_ask_merged_size, ask_implied_size));
         public ulong volume => _volume.value;
         public double settlement => _settlement.Value;
         public double day_change => _day_change.Value;
@@ -115,10 +122,14 @@ namespace mbts.spark {
         public double working_best_ask => _working_best_ask.value;
         public IList<ui.spark.CellAnimation> animations => _animation.get_animations().ToList();
         public ICommand bid_price_click { get; }
-         public ICommand bid_size_click { get; }
+         public ICommand bid_merged_size_click { get; }
+         public ICommand bid_direct_size_click { get; }
+         public ICommand bid_implied_size_click { get; }
         public ICommand working_bids_click { get; }
         public ICommand ask_price_click { get; }
-         public ICommand ask_size_click { get; }
+         public ICommand ask_merged_size_click { get; }
+         public ICommand ask_direct_size_click { get; }
+         public ICommand ask_implied_size_click { get; }
         public ICommand working_asks_click { get; }
         public ICommand default_command { get; }

@@ -133,9 +144,9 @@ namespace mbts.spark {
            bool dirty = false;
            if (md.md.get_bbo(ref _bbo_ref, out NativePriceSize b, out NativePriceSize a)) {
               _bid_price.set(b.price);
-               _bid_size.set(b.size);
+               refresh_size(ref b, ref _bid_direct_size, ref _bid_merged_size, ref _bid_merged_size_text, nameof(bid_merged_size_text));
               _ask_price.set(a.price);
-               _ask_size.set(a.size);
+               refresh_size(ref a, ref _ask_direct_size, ref _ask_merged_size, ref _ask_merged_size_text, nameof(ask_merged_size_text));
               _inside_bids.on_next_distinct(_bid_price.Value >= _working_best_bid.value, ref dirty);
               _inside_asks.on_next_distinct(_ask_price.Value <= _working_best_ask.value, ref dirty);
            }
@@ -150,6 +161,16 @@ namespace mbts.spark {
            _day_change.set(last_price - settlement);
            if (dirty)
               invalidated?.Invoke();
+
+            void refresh_size(ref NativePriceSize nps, ref uint direct, ref uint merged, ref string text, string text_prop) {
+               if (nps.size != merged || nps.direct_size != direct) {
+                  merged = nps.size;
+                  direct = nps.direct_size;
+                  text = null;
+                  dirty = true;
+                  RaisePropertyChanged(text_prop);
+               }
+            }
         }

         public bool Equals(Row other) =>
@@ -187,17 +208,33 @@ namespace mbts.spark {
                  order.Side = Side.Sell;
                  _bus.post(SparkTags.ShowOrderTicketTag, (order, bid_price, 0u));
                  break;
-               case MarketViewView.Columns.BidSize:
+               case MarketViewView.Columns.BidMergedSize:
                  order.Side = Side.Sell;
-                  _bus.post(SparkTags.ShowOrderTicketTag, (order, bid_price, bid_size));
+                  _bus.post(SparkTags.ShowOrderTicketTag, (order, bid_price, bid_merged_size));
+                  break;
+               case MarketViewView.Columns.BidDirectSize:
+                  order.Side = Side.Sell;
+                  _bus.post(SparkTags.ShowOrderTicketTag, (order, bid_price, bid_direct_size));
+                  break;
+               case MarketViewView.Columns.BidImpliedSize:
+                  order.Side = Side.Sell;
+                  _bus.post(SparkTags.ShowOrderTicketTag, (order, bid_price, bid_implied_size));
                  break;
               case MarketViewView.Columns.Ask:
                  order.Side = Side.Buy;
                  _bus.post(SparkTags.ShowOrderTicketTag, (order, ask_price, 0u));
                  break;
-               case MarketViewView.Columns.AskSize:
+               case MarketViewView.Columns.AskMergedSize:
                  order.Side = Side.Buy;
-                  _bus.post(SparkTags.ShowOrderTicketTag, (order, ask_price, ask_size));
+                  _bus.post(SparkTags.ShowOrderTicketTag, (order, ask_price, ask_merged_size));
+                  break;
+               case MarketViewView.Columns.AskDirectSize:
+                  order.Side = Side.Sell;
+                  _bus.post(SparkTags.ShowOrderTicketTag, (order, ask_price, ask_direct_size));
+                  break;
+               case MarketViewView.Columns.AskImpliedSize:
+                  order.Side = Side.Sell;
+                  _bus.post(SparkTags.ShowOrderTicketTag, (order, ask_price, ask_implied_size));
                  break;
               case MarketViewView.Columns.Last:
                  _bus.post(SparkTags.ShowOrderTicketTag, (order, last_price, 0u));
@@ -1,10 +1,13 @@
 using bts.api;
+using mbts.persist;
 using mbts.spark.filters;
 using mbts.ui;
+using mbts.ui.settings;
 using mbts.ui.utility;
 using System;
 using System.Collections.Generic;
 using System.Collections.ObjectModel;
+using System.Linq;
 using System.Reactive.Linq;
 using System.Reactive.Subjects;
 using System.Windows.Data;
@@ -17,65 +20,79 @@ namespace mbts.spark {
   partial class MarketViewVM : SecurityMDGrid<MarketViewVM.Row, SecurityMD> {
      readonly IBus _bus;
      readonly OrdersModel _orders_model;
+      IWindowSettingsManager<GridSettings> _settings_manager;

-      public MarketViewVM(IBus bus, OrdersModel orders_model, IObservable<StartupData> state)
-         : this(bus, orders_model, state, state.SelectManyInSeries(s => s.security_criteria.subscribe_md(bus))) { }
+
+      public MarketViewVM(IBus bus, OrdersModel orders_model, IObservable<StartupData> state, IWindowSettingsManager<GridSettings> settings_manager )
+         : this(bus, orders_model, state, state.SelectManyInSeries(s => s.security_criteria.subscribe_md(bus)), settings_manager) { }

      // securities_connectable should NOT be connected already.
-      MarketViewVM(IBus bus, OrdersModel orders_model, IObservable<StartupData> state, IConnectableObservable<IEnumerable<SecurityMD>> securities_connectable)
+      MarketViewVM(IBus bus, OrdersModel orders_model, IObservable<StartupData> state, IConnectableObservable<IEnumerable<SecurityMD>> securities_connectable, IWindowSettingsManager<GridSettings> settings_manager)
         : base(RXCollection.Create(securities_connectable, SecurityDataHelper.EqualityComparer.MDComparer), null) {
         _bus = bus;
         _orders_model = orders_model;
         security_filter = new RegexFilterVM<Row>(r => r.security.ToString(), nameof(Row.security));
+         _settings_manager = settings_manager;
         // Columns
-         const string size_col_header = "Qty", working_col_header = "Working";
+         const string merged_size_col_header = "Qty", direct_size_col_header = "Direct", implied_size_col_header = "Implied", working_col_header = "Working";
         const double working_orders_col_width = 105;
         IMultiValueConverter price_converter = new ui.spark.converters.TickDisplayConverter();
         add_col(Columns.Security, "Security", r => r.security.ToString(), nameof(Row.security), DefaultColumnWidths.Security, security_filter, DataGridFilterKnownTemplates.Regex);
-         add_col(Columns.Volume, "Volume", r => r.volume.ToString(), nameof(Row.volume), 64, volume_filter, DataGridFilterKnownTemplates.ULongMinMax);
+         add_col(Columns.Volume, "Volume", r => r.volume.ToString(), nameof(Row.volume), DefaultColumnWidths.Volume, volume_filter, DataGridFilterKnownTemplates.ULongMinMax);
         add_col(Columns.Last, "Last", r => r.format_price(r.last_price), nameof(Row.last_price), DefaultColumnWidths.Price, last_price_filter, DataGridFilterKnownTemplates.DoubleMinMax);
-         add_col(Columns.LastSize, size_col_header, r => r.last_size.ToString(), nameof(Row.last_size), DefaultColumnWidths.Size, last_size_filter, DataGridFilterKnownTemplates.UShortMinMax);
-         add_col(Columns.Position, "Pos", r => r.position.ToString(), nameof(Row.position), DefaultColumnWidths.Size, position_filter, DataGridFilterKnownTemplates.IntMinMax, true);
-         add_hl_working_orders_col(Columns.WorkingBids, working_col_header, nameof(Row.working_bids_text), nameof(Row.working_best_bid), nameof(Row.working_bids_click), working_bid_volume_filter, BTSColors.MarketData.bid);
-         add_hl_size_col(Columns.BidSize, size_col_header, nameof(Row.bid_size), nameof(Row.bid_size_click), bid_size_filter, BTSColors.MarketData.bid);
-         add_hl_price_col(Columns.Bid, "Bid", nameof(Row.bid_price), nameof(Row.bid_price_click), bid_price_filter, BTSColors.header_text, BTSColors.MarketData.bid_brush);
-         add_hl_price_col(Columns.Ask, "Ask", nameof(Row.ask_price), nameof(Row.ask_price_click), ask_price_filter, BTSColors.header_text, BTSColors.MarketData.ask_brush);
-         add_hl_size_col(Columns.AskSize, size_col_header, nameof(Row.ask_size), nameof(Row.ask_size_click), ask_size_filter, BTSColors.MarketData.ask);
-         add_hl_working_orders_col(Columns.WorkingAsks, working_col_header, nameof(Row.working_asks_text), nameof(Row.working_best_ask), nameof(Row.working_asks_click), working_ask_volume_filter, BTSColors.MarketData.ask);
-         add_col(Columns.Settlement, "Settlement", r => r.format_price(r.settlement), nameof(Row.settlement), DefaultColumnWidths.Price, settlement_filter, DataGridFilterKnownTemplates.DoubleMinMax);
-         add_col(Columns.DayChange, "Change", r => r.format_price(r.day_change), nameof(Row.day_change), DefaultColumnWidths.Price, day_change_filter, DataGridFilterKnownTemplates.DoubleMinMax, true);
-         add_col(Columns.SessionLow, "Low", r => r.format_price(r.session_low), nameof(Row.session_low), DefaultColumnWidths.Price, session_low_filter, DataGridFilterKnownTemplates.DoubleMinMax);
-         add_col(Columns.SessionHigh, "High", r => r.format_price(r.session_high), nameof(Row.session_high), DefaultColumnWidths.Price, session_high_filter, DataGridFilterKnownTemplates.DoubleMinMax);
+         add_col(Columns.LastSize, merged_size_col_header, r => r.last_size.ToString(), nameof(Row.last_size), DefaultColumnWidths.Size, last_size_filter, DataGridFilterKnownTemplates.UShortMinMax, h_alignment: System.Windows.HorizontalAlignment.Right);
+         add_col(Columns.Position, "Pos", r => r.position.ToString(), nameof(Row.position), DefaultColumnWidths.Size, position_filter, DataGridFilterKnownTemplates.IntMinMax, true, h_alignment: System.Windows.HorizontalAlignment.Right);
+         add_hl_working_orders_col(Columns.WorkingBids, working_col_header, nameof(Row.working_bids_text), nameof(Row.working_best_bid), nameof(Row.working_bids_click), working_bid_volume_filter, BTSColors.MarketData.bid, System.Windows.HorizontalAlignment.Right);
+         add_col(Columns.BidImpliedSize, implied_size_col_header, r => r.bid_implied_size.ToString(), nameof(Row.bid_implied_size), DefaultColumnWidths.ImpliedDirectMergedSize, bid_implied_size_filter, DataGridFilterKnownTemplates.UIntMinMax, font_color: BTSColors.MarketData.bid, h_alignment: System.Windows.HorizontalAlignment.Right);
+         add_col(Columns.BidDirectSize, direct_size_col_header, r => r.bid_direct_size.ToString(), nameof(Row.bid_direct_size), DefaultColumnWidths.ImpliedDirectMergedSize, bid_direct_size_filter, DataGridFilterKnownTemplates.UIntMinMax, font_color: BTSColors.MarketData.bid, h_alignment: System.Windows.HorizontalAlignment.Right);
+         add_hl_merged_size_col(Columns.BidMergedSize, merged_size_col_header, nameof(Row.bid_merged_size), nameof(Row.bid_merged_size_text), nameof(Row.bid_merged_size_click), bid_merged_size_filter, BTSColors.MarketData.bid, h_alignment: System.Windows.HorizontalAlignment.Right);
+         add_hl_price_col(Columns.Bid, "Bid", nameof(Row.bid_price), nameof(Row.bid_price_click), bid_price_filter, BTSColors.header_text, BTSColors.MarketData.bid_brush, h_alignment: System.Windows.HorizontalAlignment.Right);
+         add_hl_price_col(Columns.Ask, "Ask", nameof(Row.ask_price), nameof(Row.ask_price_click), ask_price_filter, BTSColors.header_text, BTSColors.MarketData.ask_brush, h_alignment: System.Windows.HorizontalAlignment.Right);
+         add_hl_merged_size_col(Columns.AskMergedSize, merged_size_col_header, nameof(Row.ask_merged_size), nameof(Row.ask_merged_size_text), nameof(Row.ask_merged_size_click), ask_merged_size_filter, BTSColors.MarketData.ask, h_alignment: System.Windows.HorizontalAlignment.Right);
+         add_col(Columns.AskDirectSize, direct_size_col_header, r => r.ask_direct_size.ToString(), nameof(Row.ask_direct_size), DefaultColumnWidths.ImpliedDirectMergedSize, ask_direct_size_filter, DataGridFilterKnownTemplates.UIntMinMax, font_color: BTSColors.MarketData.ask, h_alignment: System.Windows.HorizontalAlignment.Right);
+         add_col(Columns.AskImpliedSize, implied_size_col_header, r => r.ask_implied_size.ToString(), nameof(Row.ask_implied_size), DefaultColumnWidths.ImpliedDirectMergedSize, ask_implied_size_filter, DataGridFilterKnownTemplates.UIntMinMax, font_color: BTSColors.MarketData.ask, h_alignment: System.Windows.HorizontalAlignment.Right);
+         add_hl_working_orders_col(Columns.WorkingAsks, working_col_header, nameof(Row.working_asks_text), nameof(Row.working_best_ask), nameof(Row.working_asks_click), working_ask_volume_filter, BTSColors.MarketData.ask, System.Windows.HorizontalAlignment.Right);
+         add_col(Columns.Settlement, "Settlement", r => r.format_price(r.settlement), nameof(Row.settlement), DefaultColumnWidths.Settlement, settlement_filter, DataGridFilterKnownTemplates.DoubleMinMax, h_alignment: System.Windows.HorizontalAlignment.Right);
+         add_col(Columns.DayChange, "Change", r => r.format_price(r.day_change), nameof(Row.day_change), DefaultColumnWidths.Price, day_change_filter, DataGridFilterKnownTemplates.DoubleMinMax, true, h_alignment: System.Windows.HorizontalAlignment.Right);
+         add_col(Columns.SessionLow, "Low", r => r.format_price(r.session_low), nameof(Row.session_low), DefaultColumnWidths.Price, session_low_filter, DataGridFilterKnownTemplates.DoubleMinMax, h_alignment: System.Windows.HorizontalAlignment.Right);
+         add_col(Columns.SessionHigh, "High", r => r.format_price(r.session_high), nameof(Row.session_high), DefaultColumnWidths.Price, session_high_filter, DataGridFilterKnownTemplates.DoubleMinMax, h_alignment: System.Windows.HorizontalAlignment.Right);
         add_col(Columns.SecurityKey, "Security Key", r => r.security_key.ToString(), nameof(Row.security_key), DefaultColumnWidths.SecurityKey, security_key_filter, DataGridFilterKnownTemplates.Regex);
         //
-         void add_col(Columns col_key, string header, Func<Row, string> get_text, string prop, double width, IDataGridColumnFilter filter, string filter_template, bool is_animatable = false) =>
+         void add_col(Columns col_key, string header, Func<Row, string> get_text, string prop, double width, IDataGridColumnFilter filter, string filter_template, bool is_animatable = false, Color? font_color = null, System.Windows.HorizontalAlignment h_alignment = System.Windows.HorizontalAlignment.Left) =>
            columns.Add(new RenderTextColumn<Row, Columns>(col_key, get_text, filter, filter_template) {
+               // it's necessary to have this id populated for grid settings
+               id = bts.shell.MarketViewWindowFactory.col_id(col_key),
               Header = header,
               sort_member_path = prop,
               Width = width,
-               padding = is_animatable ? AnimatableCellPadding : DefaultCellPadding
+               padding = is_animatable ? AnimatableCellPadding : DefaultCellPadding,
+               font_color_override = font_color,
+               horizontal_alignment = h_alignment
            });

-         void add_hl_price_col(Columns col_key, string header, string prop, string command_prop, IDataGridColumnFilter filter, Color foreground, Brush background) =>
-            add_hl_col(col_key, header, price_binding(prop), prop, command_prop, filter, DataGridFilterKnownTemplates.DoubleMinMax, DefaultColumnWidths.Price, foreground, background, DefaultSelectionHighlight);
+         void add_hl_price_col(Columns col_key, string header, string prop, string command_prop, IDataGridColumnFilter filter, Color foreground, Brush background, System.Windows.HorizontalAlignment h_alignment) =>
+            add_hl_col(col_key, header, price_binding(prop), prop, command_prop, filter, DataGridFilterKnownTemplates.DoubleMinMax, DefaultColumnWidths.MViewPrice, foreground, background, DefaultSelectionHighlight, h_alignment);

-         void add_hl_size_col(Columns col_key, string header, string prop, string command_prop, IDataGridColumnFilter filter, Color foreground) =>
-            add_hl_col(col_key, header, new Binding(prop), prop, command_prop, filter, DataGridFilterKnownTemplates.UShortMinMax, DefaultColumnWidths.Size, foreground, null, null);
+         void add_hl_merged_size_col(Columns col_key, string header, string sort_prop, string text_prop, string command_prop, IDataGridColumnFilter filter, Color foreground, System.Windows.HorizontalAlignment h_alignment) =>
+            add_hl_col(col_key, header, new Binding(text_prop), sort_prop, command_prop, filter, DataGridFilterKnownTemplates.UShortMinMax, DefaultColumnWidths.ImpliedDirectMergedSize, foreground, null, null, h_alignment);

-         void add_hl_working_orders_col(Columns col_key, string header, string text_prop, string sort_prop, string command_prop, IDataGridColumnFilter filter, Color foreground) =>
-            add_hl_col(col_key, header, new Binding(text_prop), sort_prop, command_prop, filter, DataGridFilterKnownTemplates.IntMinMax, working_orders_col_width, foreground, null, null);
+         void add_hl_working_orders_col(Columns col_key, string header, string text_prop, string sort_prop, string command_prop, IDataGridColumnFilter filter, Color foreground, System.Windows.HorizontalAlignment h_alignment) =>
+            add_hl_col(col_key, header, new Binding(text_prop), sort_prop, command_prop, filter, DataGridFilterKnownTemplates.IntMinMax, working_orders_col_width, foreground, null, null, h_alignment);

         void add_hl_col(
            Columns col_key, string header, BindingBase binding, string prop, string command_prop,
-            IDataGridColumnFilter filter, string filter_template, double width, Color foreground, Brush background, Brush background_overlay) =>
+            IDataGridColumnFilter filter, string filter_template, double width, Color foreground, Brush background, Brush background_overlay, System.Windows.HorizontalAlignment h_alignment = System.Windows.HorizontalAlignment.Left) =>
         columns.Add(new HyperlinkElementColumn<Row, Columns>(
            col_key, binding, new Binding(command_prop), filter, filter_template) {
+            // it's necessary to have this id populated for grid settings
+            id = bts.shell.MarketViewWindowFactory.col_id(col_key),
            Header = header,
            sort_member_path = prop,
            font_color_override = foreground,
            background = background,
            background_overlay = background_overlay,
-            Width = DefaultColumnWidths.Price
+            Width = DefaultColumnWidths.Price,
+            horizontal_alignment = h_alignment
         });

         BindingBase price_binding(string prop) {
@@ -85,17 +102,41 @@ namespace mbts.spark {
            return mb;
         }
         //
+         // make font-color immutable for Side, Size, (the font-color rule is hard-coded: MarketData.bid for Buy orders, MarketData.ask for Sells)
+         var col_settings_flags = new Dictionary<string, GridColumnSettingsFeatureFlags> {
+            { Columns.Bid.ToString(), GridColumnSettingsFeatureFlags.ImmutableFontColor },
+            { Columns.Ask.ToString(), GridColumnSettingsFeatureFlags.ImmutableFontColor },
+            { Columns.BidImpliedSize.ToString(), GridColumnSettingsFeatureFlags.ImmutableFontColor },
+            { Columns.BidDirectSize.ToString(), GridColumnSettingsFeatureFlags.ImmutableFontColor },
+            { Columns.BidMergedSize.ToString(), GridColumnSettingsFeatureFlags.ImmutableFontColor },
+            { Columns.AskImpliedSize.ToString(), GridColumnSettingsFeatureFlags.ImmutableFontColor },
+            { Columns.AskDirectSize.ToString(), GridColumnSettingsFeatureFlags.ImmutableFontColor },
+            { Columns.AskMergedSize.ToString(), GridColumnSettingsFeatureFlags.ImmutableFontColor },
+            { Columns.WorkingAsks.ToString(), GridColumnSettingsFeatureFlags.ImmutableFontColor },
+            { Columns.WorkingBids.ToString(), GridColumnSettingsFeatureFlags.ImmutableFontColor }
+         };
+         grid_settings_manager = new SimpleGridSettingsManager<Row>(columns, col_settings_flags, row_vms);
+         // this will initialize the immutable properties that correspond to the col_settings_flags above (e.g. Bid/Ask font_color_override, etc.)
+         grid_settings_manager.load_from(settings_manager.current_settings());
+         //
         _resources.AddRange(
            state.OnDispatcher().Subscribe(s => {
               using (rows_view.DeferRefresh()) {
-                  rows_view.SetSortingCriteria(s.sorting_criteria);
-                  var filters = s.filters;
-                  if (filters != null) {
+                  if (s.grid != null) {
+                     // this means we are not using defaults,
+                     // Note: settings_manager in turn notifies grid_settings_manager of this update
+                     _settings_manager.instance_settings = s.grid;
+                  }
+                  if (s.filters is FilterStates filters) {
                     security_filter.load_state(filters.security);
                     bid_price_filter.load_state(filters.bid_price);
-                     bid_size_filter.load_state(filters.bid_size);
+                     bid_merged_size_filter.load_state(filters.bid_merged_size);
+                     bid_direct_size_filter.load_state(filters.bid_direct_size);
+                     bid_implied_size_filter.load_state(filters.bid_implied_size);
                     ask_price_filter.load_state(filters.ask_price);
-                     ask_size_filter.load_state(filters.ask_size);
+                     ask_merged_size_filter.load_state(filters.ask_merged_size);
+                     ask_direct_size_filter.load_state(filters.ask_direct_size);
+                     ask_implied_size_filter.load_state(filters.ask_implied_size);
                     last_price_filter.load_state(filters.last_price);
                     last_size_filter.load_state(filters.last_size);
                     day_change_filter.load_state(filters.day_change);
@@ -108,23 +149,40 @@ namespace mbts.spark {
                     volume_filter.load_state(filters.volume);
                     security_key_filter.load_state(filters.security_key);
                  }
+                  rows_view.set_sort_descriptions(s.sorting_criterion, columns);
               }
-            }), DataGridFilterHelper.hook_filters(rows_view,
-            security_filter, bid_price_filter, bid_size_filter, ask_price_filter, ask_size_filter, last_price_filter, last_size_filter, day_change_filter, settlement_filter,
+            }), DataGridFilterHelper.hook_filters(rows_view, security_filter,
+            bid_price_filter, bid_merged_size_filter, bid_direct_size_filter, bid_implied_size_filter,
+            ask_price_filter, ask_merged_size_filter, ask_direct_size_filter, ask_implied_size_filter,
+            last_price_filter, last_size_filter, day_change_filter, settlement_filter,
            session_low_filter, session_high_filter, position_filter, working_bid_volume_filter, working_ask_volume_filter, volume_filter, security_key_filter),
            securities_connectable.Connect(),
+            settings_manager.subscribe_current().OnDispatcher().Subscribe(grid_settings_manager),
            WorkLoop.Start("MarketView", _refresh)
         );
      }

      public ObservableCollection<ColumnBase> columns { get; } = new ObservableCollection<ColumnBase>();

+      public SimpleGridSettingsManager<Row> grid_settings_manager { get; }
+
+      public GridSettings get_grid_save_state() {
+         if (_settings_manager.instance_settings == null)
+            return null;
+         else
+            return grid_settings_manager.create();
+      }
+
      #region Filters
      public IDataGridColumnPersistentFilter<Row, string> security_filter { get; }
      public IDataGridColumnPersistentFilter<Row, DoubleMinMaxState> bid_price_filter { get; } = new DoubleMinMax<Row>(r => r.bid_price, nameof(Row.bid_price));
-      public IDataGridColumnPersistentFilter<Row, UIntMinMaxState> bid_size_filter { get; } = new UIntMinMax<Row>(r => r.bid_size, nameof(Row.bid_size));
+      public IDataGridColumnPersistentFilter<Row, UIntMinMaxState> bid_merged_size_filter { get; } = new UIntMinMax<Row>(r => r.bid_merged_size, nameof(Row.bid_merged_size));
+      public IDataGridColumnPersistentFilter<Row, UIntMinMaxState> bid_direct_size_filter { get; } = new UIntMinMax<Row>(r => r.bid_direct_size, nameof(Row.bid_direct_size));
+      public IDataGridColumnPersistentFilter<Row, UIntMinMaxState> bid_implied_size_filter { get; } = new UIntMinMax<Row>(r => r.bid_implied_size, nameof(Row.bid_implied_size));
      public IDataGridColumnPersistentFilter<Row, DoubleMinMaxState> ask_price_filter { get; } = new DoubleMinMax<Row>(r => r.ask_price, nameof(Row.ask_price));
-      public IDataGridColumnPersistentFilter<Row, UIntMinMaxState> ask_size_filter { get; } = new UIntMinMax<Row>(r => r.ask_size, nameof(Row.ask_size));
+      public IDataGridColumnPersistentFilter<Row, UIntMinMaxState> ask_merged_size_filter { get; } = new UIntMinMax<Row>(r => r.ask_merged_size, nameof(Row.ask_merged_size));
+      public IDataGridColumnPersistentFilter<Row, UIntMinMaxState> ask_direct_size_filter { get; } = new UIntMinMax<Row>(r => r.ask_direct_size, nameof(Row.ask_direct_size));
+      public IDataGridColumnPersistentFilter<Row, UIntMinMaxState> ask_implied_size_filter { get; } = new UIntMinMax<Row>(r => r.ask_implied_size, nameof(Row.ask_implied_size));
      public IDataGridColumnPersistentFilter<Row, DoubleMinMaxState> last_price_filter { get; } = new DoubleMinMax<Row>(r => r.last_price, nameof(Row.last_price));
      public IDataGridColumnPersistentFilter<Row, UIntMinMaxState> last_size_filter { get; } = new UIntMinMax<Row>(r => r.last_size, nameof(Row.last_size));
      public IDataGridColumnPersistentFilter<Row, DoubleMinMaxState> day_change_filter { get; } = new DoubleMinMax<Row>(r => r.day_change, nameof(Row.day_change));
@@ -141,9 +199,13 @@ namespace mbts.spark {
         return new FilterStates {
            security = security_filter.get_state(),
            bid_price = bid_price_filter.get_state(),
-            bid_size = bid_size_filter.get_state(),
+            bid_merged_size = bid_merged_size_filter.get_state(),
+            bid_direct_size = bid_direct_size_filter.get_state(),
+            bid_implied_size = bid_implied_size_filter.get_state(),
            ask_price = ask_price_filter.get_state(),
-            ask_size = ask_size_filter.get_state(),
+            ask_merged_size = ask_merged_size_filter.get_state(),
+            ask_direct_size = ask_direct_size_filter.get_state(),
+            ask_implied_size = ask_implied_size_filter.get_state(),
            last_price = last_price_filter.get_state(),
            last_size = last_size_filter.get_state(),
            day_change = day_change_filter.get_state(),
@@ -21,6 +21,7 @@
      Columns="{Binding columns}"
      CurrentRow="{Binding current_row}"
      Rows="{Binding rows_view}"
+      SelectionHighlight="{Binding grid_settings_manager.selection_highlight, Mode=OneWay}"
    >
      <c:DIYGrid.InputBindings>
        <MouseBinding MouseAction="LeftDoubleClick" Command="{x:Static c:DIYGrid.DefaultRowCommand}"/>
@@ -8,7 +8,7 @@ namespace mbts.ui.spark {
   /// Interaction logic for MarketSheetsView.xaml
   /// </summary>
   partial class MarketViewView : UserControl {
-      public enum Columns { Security, Volume, Last, LastSize, Position, WorkingBids, Bid, BidSize, Ask, AskSize, WorkingAsks, Settlement, DayChange, SessionLow, SessionHigh, SecurityKey }
+      public enum Columns { Security, Volume, Last, LastSize, Position, WorkingBids, Bid, BidMergedSize, BidDirectSize, BidImpliedSize, Ask, AskMergedSize, AskDirectSize, AskImpliedSize, WorkingAsks, Settlement, DayChange, SessionLow, SessionHigh, SecurityKey }

      public MarketViewView() {
         InitializeComponent();
@@ -2,8 +2,11 @@
 using bts.api;
 using bts.shell;
 using bts.spark;
+using mbts.persist;
 using mbts.ui;
+using mbts.ui.settings;
 using mbts.ui.spark;
+using mbts.ui.utility;
 using mbts.utils;
 using System;
 using System.Collections.Generic;
@@ -16,16 +19,18 @@ namespace mbts.spark {
      const string _window_type = "MarketView", _thread_id = "MarketView", _window_type_display_name = "Market View";
      readonly OrdersModel _orders_model;
      readonly AllowOnce _init_guard = new AllowOnce("MarketView");
+      readonly IWindowSettingsManager<GridSettings> _settings_manager;
      MarketViewVM _vm;
      MarketViewView _view;
      MarketViewWindowFactory.StartupData _state;
      IReadOnlyList<SparkCommand> _commands;
      IDisposable _subscriptions;

-      public MarketViewWindow(MarketViewWindowFactory factory, IBus bus, OrdersModel orders_model, MarketViewWindowFactory.StartupData state)
+      public MarketViewWindow(MarketViewWindowFactory factory, IBus bus, OrdersModel orders_model, MarketViewWindowFactory.StartupData state, WindowSettingsManager<GridSettings> settings_manager)
         : base("Market View", bus, factory, SparkCommands.ShowMarketView.icon) {
         _orders_model = orders_model;
         _state = state;
+         _settings_manager = settings_manager;
         Icon.Freeze();
      }

@@ -34,15 +39,21 @@ namespace mbts.spark {
      public override string window_type => _window_type;
      public override UIElement Content => _view;
      public override IEnumerable<SparkCommand> Commands => _commands;
-      public override MarketViewWindowFactory.StartupData SaveState => _state = new MarketViewWindowFactory.StartupData(_state.security_criteria, _vm.rows_view.GetSortingCriteria(), _vm.get_filter_states());
-      public override double MinWidth => 1035 + SPARK_MENU_COLLAPSED_WIDTH + LAUNCHER_BUTTON_BORDER_WIDTH;
+      public override MarketViewWindowFactory.StartupData SaveState =>
+         _state = new MarketViewWindowFactory.StartupData(_state.security_criteria, _vm.get_filter_states(), _vm.get_grid_save_state(), _vm.rows_view.get_sorting_criteria(_vm.columns));
+
+      public override double MinWidth => MarketViewWindowFactory.StartupData.DefaultGridSettings.columns.Sum(gcs => gcs.width)
+         + SPARK_MENU_COLLAPSED_WIDTH
+         + LAUNCHER_BUTTON_BORDER_WIDTH
+         + EXTRA_FOR_NO_HORIZONTAL_SCROLLBAR_WIDTH;
+
      public string thread_id => _thread_id;

      public void thread_init() {
         _init_guard.check_access();
         Log.notnull(_state);
         var state_src = Observable.FromEvent<Action<MarketViewWindowFactory.StartupData>, MarketViewWindowFactory.StartupData>(cb => _state_changed += cb, cb => _state_changed -= cb).StartWith(_state);
-         _vm = new MarketViewVM(_bus, _orders_model, state_src);
+         _vm = new MarketViewVM(_bus, _orders_model, state_src, _settings_manager);
         _view = new MarketViewView { DataContext = _vm };
         var update_securities_cmd = SparkCommands.change_securities_callback(_window_type_display_name);
         _commands = new List<SparkCommand> {
@@ -55,10 +66,28 @@ namespace mbts.spark {
            ),
            SparkCommands.ShowTimeAndSales.complete(_vm.selected_securities_observable(), _ => true, secs => secs.Count > 0 ? new SecurityCriteria(secs) : _state.security_criteria),
            SparkCommands.ShowSyntheticCreate.complete(_vm.selected_securities_observable(), secs => secs.Count > 0 && secs.Count <= 24, secs => new SecurityCriteria(secs)),
-            SparkCommands.change_securities_command(() => (update_securities_cmd, _state.security_criteria))
+            SparkCommands.change_securities_command(() => (update_securities_cmd, _state.security_criteria)),
+            // wrap the grid settings view factory in a dialogCommand here since the vm is destroyed/recreated when the security criteria changes
+            SparkCommands.window_settings_command(new DialogCommand(() => {
+               var vm = new WindowSettingsDialogVM<GridSettings, SimpleGridSettingsVM>(
+                  _settings_manager,
+                  us => us.market_view_grid,
+                  UserSettings.FileExtensions.GRID,
+                  s => _vm.grid_settings_manager.create_vm(
+                     // we need to get the most up to date GridSettings when launching b/c users may
+                     // have changed some settings on the grid directly, like column widths.
+                     s.with(_vm.columns.Select( c => c.create())), 
+                     this.observe_title()
+                  )
+               );
+               // TODO: bind to main window's Title
+               var dialog = new SimpleGridSettingsDialog { Title = "Market View Grid Settings", DataContext = vm };
+               vm.RequestClose += (s, e) => WindowUtilities.force_close(dialog);
+               return dialog;
+            }))
         };
         _subscriptions = _bus.subscribe(update_securities_cmd.tag).OnDispatcher().Subscribe(c =>
-            _state_changed?.Invoke(_state = new MarketViewWindowFactory.StartupData(c, _vm.rows_view.GetSortingCriteria(), _vm.get_filter_states())));
+            _state_changed?.Invoke(_state = new MarketViewWindowFactory.StartupData(c, _vm.get_filter_states(), _vm.grid_settings_manager.create())));
      }

      public override void Dispose() {
@@ -67,4 +96,4 @@ namespace mbts.spark {
         Commands.OfType<IDisposable>().DisposeAll();
      }
   }
-}
+}
@@ -1,31 +1,47 @@
 using bts.api;
+using mbts.persist;
 using mbts.spark;
 using mbts.spark.filters;
 using mbts.ui;
+using mbts.ui.settings;
 using ProtoBuf;
 using System;
 using System.Collections.Generic;
+using System.Linq;
 using System.Reactive.Linq;
 using System.Threading.Tasks;
+using static mbts.ui.controls.DIYGrid;
+using static mbts.ui.spark.MarketViewView;

 namespace bts.shell {
   class MarketViewWindowFactory : ShellWindowFactory<MarketViewWindowFactory.StartupData> {
      readonly IBus _bus;
      readonly OrdersModel _orders_model;
+      readonly UserSettingsHub _settings_hub;

-      public MarketViewWindowFactory(MarketShellModule module, IBus bus, OrdersModel orders_model) : base(module, "MarketView") {
+
+      public MarketViewWindowFactory(MarketShellModule module, IBus bus, UserSettingsHub settings_hub, OrdersModel orders_model) : base(module, "MarketView") {
         _bus = bus;
         _orders_model = orders_model;
+         _settings_hub = settings_hub;
         _dispose = bus.subscribe(SparkTags.ShowMarketViewTag).OnDispatcher().Subscribe(_show);
      }

+      public static string col_id(Columns col) => col.ToString();
+
      public override Task<IShellWindow> load(StartupData state) =>
         Task.FromResult(_create(state));

      void _show(SecurityCriteria criteria) =>
-         _bus.post(SparkTags.ShowWindow, _create(new StartupData(criteria, new List<SortingCriteria> { new SortingCriteria(nameof(MarketViewVM.Row.security), true) }, null)));
+         _bus.post(SparkTags.ShowWindow, _create(StartupData.Default(criteria)));

-      IShellWindow _create(StartupData state) => new MarketViewWindow(this, _bus, _orders_model, state);
+      IShellWindow _create(StartupData state) {
+         var settings_manager = new WindowSettingsManager<GridSettings>(_settings_hub, 
+            state.grid, 
+            get: us => us.market_view_grid, 
+            set: (us, gs) => us.with(provided_market_view_gridsettings: gs));
+         return new MarketViewWindow(this, _bus, _orders_model, state, settings_manager);
+      }

      [ProtoContract]
      public class StartupData {
@@ -34,20 +50,89 @@ namespace bts.shell {
         [ProtoMember(1)]
         public readonly SecurityCriteria security_criteria;
         [ProtoMember(2)]
-         public readonly List<SortingCriteria> sorting_criteria;
+         List<SortingCriteria> _sorting_criteria;
         [ProtoMember(3)]
         public readonly FilterStates filters;
+         [ProtoMember(4)]
+         public GridSettings grid;

-         StartupData() { }
+         public StartupData() { }

         public StartupData(SecurityCriteria security_criteria)
-            : this (security_criteria, new List<SortingCriteria>(), null) { }
+            : this (security_criteria, new FilterStates()) { }

-         public StartupData(SecurityCriteria security_criteria, List<SortingCriteria> sorting_criteria, FilterStates filters) {
+         public StartupData(SecurityCriteria security_criteria, FilterStates filters, GridSettings grid = default, List<SortingCriteria> sort = null) {
            this.security_criteria = security_criteria;
-            this.sorting_criteria = sorting_criteria;
            this.filters = filters;
+            this.grid = grid;
+            _sorting_criteria = sort;
         }
+
+         public static GridSettings DefaultGridSettings => GridSettings.Default.with(DefaultColumns.all, DefaultColumns.default_sorting_criterion);
+
+         public IReadOnlyList<SortingCriteria> sorting_criterion => _sorting_criteria ?? (_sorting_criteria = DefaultColumns.default_sorting_criterion.ToList());
+
+         public static StartupData Default(SecurityCriteria security_criteria) =>
+            new StartupData(security_criteria, new FilterStates(), null);
+
+         static class DefaultColumns {
+
+            public static GridColumnSettings security => new GridColumnSettings(col_id(Columns.Security), DefaultColumnHeaders.Security, width: DefaultColumnWidths.Security);
+            public static GridColumnSettings volume => new GridColumnSettings(col_id(Columns.Volume), DefaultColumnHeaders.Volume, width: DefaultColumnWidths.Volume);
+            public static GridColumnSettings last => new GridColumnSettings(col_id(Columns.Last), DefaultColumnHeaders.Last, width: DefaultColumnWidths.Price);
+            public static GridColumnSettings last_size => new GridColumnSettings(col_id(Columns.LastSize), DefaultColumnHeaders.Size, width: DefaultColumnWidths.Size, horizontal_alignment: System.Windows.HorizontalAlignment.Right);
+            public static GridColumnSettings position => new GridColumnSettings(col_id(Columns.Position), DefaultColumnHeaders.Pos, width: DefaultColumnWidths.Size, horizontal_alignment: System.Windows.HorizontalAlignment.Right);
+            public static GridColumnSettings working_bids => new GridColumnSettings(col_id(Columns.WorkingBids), DefaultColumnHeaders.Working, font_color_override: BTSColors.MarketData.bid, width: DefaultColumnWidths.Working, horizontal_alignment: System.Windows.HorizontalAlignment.Right);
+            public static GridColumnSettings bid_implied_size => new GridColumnSettings(col_id(Columns.BidImpliedSize), DefaultColumnHeaders.ImpliedSize, font_color_override: BTSColors.MarketData.bid, width: DefaultColumnWidths.ImpliedDirectMergedSize, horizontal_alignment: System.Windows.HorizontalAlignment.Right);
+            public static GridColumnSettings bid_direct_size => new GridColumnSettings(col_id(Columns.BidDirectSize), DefaultColumnHeaders.DirectSize, font_color_override: BTSColors.MarketData.bid, width: DefaultColumnWidths.ImpliedDirectMergedSize, horizontal_alignment: System.Windows.HorizontalAlignment.Right);
+            public static GridColumnSettings bid_merged_size => new GridColumnSettings(col_id(Columns.BidMergedSize), DefaultColumnHeaders.MergedSize, font_color_override: BTSColors.MarketData.bid, width: DefaultColumnWidths.ImpliedDirectMergedSize, horizontal_alignment: System.Windows.HorizontalAlignment.Right);
+            public static GridColumnSettings bid => new GridColumnSettings(col_id(Columns.Bid), DefaultColumnHeaders.Bid, font_color_override: BTSColors.header_text, width:DefaultColumnWidths.MViewPrice, horizontal_alignment: System.Windows.HorizontalAlignment.Right);
+            public static GridColumnSettings ask => new GridColumnSettings(col_id(Columns.Ask), DefaultColumnHeaders.Ask, font_color_override: BTSColors.header_text, width: DefaultColumnWidths.MViewPrice, horizontal_alignment: System.Windows.HorizontalAlignment.Right);
+            public static GridColumnSettings ask_merged_size => new GridColumnSettings(col_id(Columns.AskMergedSize), DefaultColumnHeaders.MergedSize, font_color_override: BTSColors.MarketData.ask, width: DefaultColumnWidths.ImpliedDirectMergedSize, horizontal_alignment: System.Windows.HorizontalAlignment.Right);
+            public static GridColumnSettings ask_direct_size => new GridColumnSettings(col_id(Columns.AskDirectSize), DefaultColumnHeaders.DirectSize, font_color_override: BTSColors.MarketData.ask, width: DefaultColumnWidths.ImpliedDirectMergedSize, horizontal_alignment: System.Windows.HorizontalAlignment.Right);
+            public static GridColumnSettings ask_implied_size => new GridColumnSettings(col_id(Columns.AskImpliedSize), DefaultColumnHeaders.ImpliedSize, font_color_override: BTSColors.MarketData.ask, width: DefaultColumnWidths.ImpliedDirectMergedSize, horizontal_alignment: System.Windows.HorizontalAlignment.Right);
+            public static GridColumnSettings working_asks => new GridColumnSettings(col_id(Columns.WorkingAsks), DefaultColumnHeaders.Working, font_color_override: BTSColors.MarketData.ask, width: DefaultColumnWidths.Working, horizontal_alignment: System.Windows.HorizontalAlignment.Right);
+            public static GridColumnSettings settlement => new GridColumnSettings(col_id(Columns.Settlement), DefaultColumnHeaders.Settlement, width: DefaultColumnWidths.Settlement, horizontal_alignment: System.Windows.HorizontalAlignment.Right);
+            public static GridColumnSettings day_change => new GridColumnSettings(col_id(Columns.DayChange), DefaultColumnHeaders.DayChange, width: DefaultColumnWidths.Price, horizontal_alignment: System.Windows.HorizontalAlignment.Right);
+            public static GridColumnSettings session_low => new GridColumnSettings(col_id(Columns.SessionLow), DefaultColumnHeaders.SessionLow, width: DefaultColumnWidths.Price, horizontal_alignment: System.Windows.HorizontalAlignment.Right);
+            public static GridColumnSettings session_high => new GridColumnSettings(col_id(Columns.SessionHigh), DefaultColumnHeaders.SessionHigh, width: DefaultColumnWidths.Price, horizontal_alignment: System.Windows.HorizontalAlignment.Right);
+            public static GridColumnSettings security_key => new GridColumnSettings(col_id(Columns.SecurityKey), DefaultColumnHeaders.SecurityKey, width: DefaultColumnWidths.SecurityKey);
+
+
+
+            public static IEnumerable<SortingCriteria> default_sorting_criterion {
+               get {
+                  yield return new SortingCriteria(security.id, true);
+               }
+            }
+
+            public static IEnumerable<GridColumnSettings> all {
+               get {
+                  yield return security;
+                  yield return volume;
+                  yield return last;
+                  yield return last_size;
+                  yield return position;
+                  yield return working_bids;
+                  yield return bid_implied_size;
+                  yield return bid_direct_size;
+                  yield return bid_merged_size;
+                  yield return bid;
+                  yield return ask;
+                  yield return ask_merged_size;
+                  yield return ask_direct_size;
+                  yield return ask_implied_size;
+                  yield return working_asks;
+                  yield return settlement;
+                  yield return day_change;
+                  yield return session_low;
+                  yield return session_high;
+                  yield return security_key;
+               }
+            }
+
+         }
+
      }

      [ProtoContract]
@@ -57,11 +142,11 @@ namespace bts.shell {
         [ProtoMember(2)]
         public DoubleMinMaxState bid_price;
         [ProtoMember(3)]
-         public UIntMinMaxState bid_size;
+         public UIntMinMaxState bid_merged_size;
         [ProtoMember(4)]
         public DoubleMinMaxState ask_price;
         [ProtoMember(5)]
-         public UIntMinMaxState ask_size;
+         public UIntMinMaxState ask_merged_size;
         [ProtoMember(6)]
         public DoubleMinMaxState last_price;
         [ProtoMember(7)]
@@ -84,6 +169,14 @@ namespace bts.shell {
         public ULongMinMaxState volume;
         [ProtoMember(16)]
         public string security_key;
+         [ProtoMember(17)]
+         public UIntMinMaxState bid_direct_size;
+         [ProtoMember(18)]
+         public UIntMinMaxState bid_implied_size;
+         [ProtoMember(19)]
+         public UIntMinMaxState ask_direct_size;
+         [ProtoMember(20)]
+         public UIntMinMaxState ask_implied_size;
      }
   }
 }
@@ -19,11 +19,14 @@ namespace mbts.spark {
   }

   class TimeAndSalesModel : IDisposable {
+      internal readonly SecurityCriteria security_criteria;
+
      static readonly TimeSpan _poll_interval = TimeSpan.FromSeconds(0.4);
      Lazy<IObservable<IReadOnlyList<TradeInfo>>> _trades;
      IDisposable _dispose;

      public TimeAndSalesModel(IBus bus, MDConsumer consumer, SecurityCriteria security_criteria) {
+         this.security_criteria = security_criteria;
         var curr_channels = new Dictionary<ChannelKey, ChannelConsumer>(); 
         _trades = new Lazy<IObservable<IReadOnlyList<TradeInfo>>>(() => Observable.Interval(_poll_interval).Select(_ => {
            var copy = curr_channels;
@@ -3,7 +3,6 @@ using bts.co2;
 using mbts.spark.filters;
 using mbts.ui;
 using mbts.ui.controls;
-using mbts.ui.settings;
 using mbts.ui.spark;
 using mbts.ui.utility;
 using System;
@@ -15,17 +14,25 @@ using System.Windows.Input;
 using System.Windows.Media;
 using static bts.shell.TimeAndSalesWindowFactory;
 using static mbts.ui.controls.DIYGrid;
+using mbts.persist;
+using mbts.ui.settings;
+using System.Reactive.Linq;

 namespace mbts.spark {
   class TimeAndSalesVM : SecurityGrid<TimeAndSalesVM.Row, TradeInfo> {
      readonly IBus _bus;
+      readonly TimeAndSalesModel _model;
+      IWindowSettingsManager<GridSettings> _settings_manager;

-      public TimeAndSalesVM(IBus bus, TimeAndSalesModel model, IReadOnlyCollection<SortingCriteria> sorting_criteria, FilterStates filters)
-         : base(RXCollection.CreateBuffer(model.trades, 1000), sorting_criteria) {
+
+      public TimeAndSalesVM(IBus bus, IWindowSettingsManager<GridSettings> settings_manager, TimeAndSalesModel model, StartupData startup_data)
+         : base(RXCollection.CreateBuffer(model.trades, 1000), Enumerable.Empty<SortingCriteria>()) {
         _bus = bus;
+         _model = model;
+         _settings_manager = settings_manager;
         show_ladder = DelegateCommandParamObserver.Create(current_row_observable, r => _show_ladder_async(r).ignore(), r => r != null);
         security_filter = new RegexFilterVM<Row>(r => r.security.ToString(), nameof(Row.security));
-         if (filters != null) {
+         if (startup_data.filters is FilterStates filters) {
            time_filter.load_state(filters.time);
            security_filter.load_state(filters.security);
            price_filter.load_state(filters.price);
@@ -35,33 +42,49 @@ namespace mbts.spark {
            security_key_filter.load_state(filters.security_key);
         }
         // Columns
-         add_column(TimeAndSalesView.Columns.Security, DefaultColumnHeaders.Security, DefaultColumnWidths.Security, security_filter, DataGridFilterKnownTemplates.Regex);
-         add_column(TimeAndSalesView.Columns.Time, DefaultColumnHeaders.Time, DefaultColumnWidths.Time, time_filter, DataGridFilterKnownTemplates.TimeFilter);
-         add_column(TimeAndSalesView.Columns.Price, DefaultColumnHeaders.Price, DefaultColumnWidths.Price, price_filter, DataGridFilterKnownTemplates.DoubleMinMax, System.Windows.HorizontalAlignment.Right);
-         add_column(TimeAndSalesView.Columns.Size, DefaultColumnHeaders.Size, DefaultColumnWidths.Size, size_filter, DataGridFilterKnownTemplates.UIntMinMax, System.Windows.HorizontalAlignment.Right);
-         add_column(TimeAndSalesView.Columns.Aggressor, DefaultColumnHeaders.Aggressor, DIYGrid.DefaultColumnWidths.Aggressor, aggressor_filter, DataGridFilterKnownTemplates.EnumValues);
-         add_column(TimeAndSalesView.Columns.TradeKey, DefaultColumnHeaders.TradeKey, DIYGrid.DefaultColumnWidths.TradeKey, trade_key_filter, DataGridFilterKnownTemplates.Regex);
-         add_column(TimeAndSalesView.Columns.SecurityKey, DefaultColumnHeaders.SecurityKey, DIYGrid.DefaultColumnWidths.SecurityKey, security_key_filter, DataGridFilterKnownTemplates.Regex);
-         void add_column(TimeAndSalesView.Columns col_key, string header, double width, IDataGridColumnFilter filter, string filter_template, System.Windows.HorizontalAlignment h_alignment = System.Windows.HorizontalAlignment.Left) =>
+         add_column(TimeAndSalesView.Columns.Security, DefaultColumnHeaders.Security, DefaultColumnWidths.Security, nameof(Row.security), security_filter, DataGridFilterKnownTemplates.Regex);
+         add_column(TimeAndSalesView.Columns.Time, DefaultColumnHeaders.Time, DefaultColumnWidths.Time, nameof(Row.time), time_filter, DataGridFilterKnownTemplates.TimeFilter);
+         add_column(TimeAndSalesView.Columns.Price, DefaultColumnHeaders.Price, DefaultColumnWidths.Price, nameof(Row.price), price_filter, DataGridFilterKnownTemplates.DoubleMinMax, System.Windows.HorizontalAlignment.Right);
+         add_column(TimeAndSalesView.Columns.Size, DefaultColumnHeaders.Size, DefaultColumnWidths.Size, nameof(Row.size), size_filter, DataGridFilterKnownTemplates.UIntMinMax, System.Windows.HorizontalAlignment.Right);
+         add_column(TimeAndSalesView.Columns.Aggressor, DefaultColumnHeaders.Aggressor, DefaultColumnWidths.Aggressor, nameof(Row.aggressor_side), aggressor_filter, DataGridFilterKnownTemplates.EnumValues);
+         add_column(TimeAndSalesView.Columns.TradeKey, DefaultColumnHeaders.TradeKey, DefaultColumnWidths.TradeKey, nameof(Row.trade_key), trade_key_filter, DataGridFilterKnownTemplates.Regex);
+         add_column(TimeAndSalesView.Columns.SecurityKey, DefaultColumnHeaders.SecurityKey, DefaultColumnWidths.SecurityKey, nameof(Row.security_key), security_key_filter, DataGridFilterKnownTemplates.Regex);
+         void add_column(TimeAndSalesView.Columns col_key, string header, double width, string sort_member_path, IDataGridColumnFilter filter, string filter_template, System.Windows.HorizontalAlignment h_alignment = System.Windows.HorizontalAlignment.Left) =>
            columns.Add(new TimeAndSalesColumn(
-               r => r[col_key]
+               col_key
               , (r) => _get_aggressor_brush(r)
               , filter
               , filter_template
            ) 
-            { Header = header, Width = width, horizontal_alignment = h_alignment  }
+            { Header = header, Width = width, sort_member_path = sort_member_path, horizontal_alignment = h_alignment  }
         );
         
+         // be sure to load GridSettings AFTER the columns collection has been populated, the grid settings manager looks columns by id to apply the appropriate settings,
+         // if the collection is not populated, the column settings will not be applied
+         grid_settings_manager = new SimpleGridSettingsManager<Row>(columns, new Dictionary<string, GridColumnSettingsFeatureFlags> { }, row_vms);
+         grid_settings_manager.load_from(settings_manager.current_settings());
         _resources.AddRange(
            show_ladder,
            DataGridFilterHelper.hook_filters(
-               rows_view, time_filter, security_filter, price_filter, size_filter, aggressor_filter, trade_key_filter, security_key_filter
-             )
+               rows_view, time_filter, security_filter, price_filter, size_filter, aggressor_filter, trade_key_filter, security_key_filter),
+            settings_manager.subscribe_current().OnDispatcher().Subscribe(grid_settings_manager)
          );
+         rows_view.set_sort_descriptions(startup_data.sorting_criterion, columns);
      }

      public ObservableCollection<DIYGrid.ColumnBase> columns { get; } = new ObservableCollection<DIYGrid.ColumnBase>();
      public DelegateCommandParamObserver<Row> show_ladder { get; }
+      public SimpleGridSettingsManager<Row> grid_settings_manager { get; }
+
+      public GridSettings get_grid_save_state() {
+         if (_settings_manager.instance_settings == null)
+            return null;
+         else
+            return grid_settings_manager.create();
+      }
+
+      public StartupData create() =>
+         new StartupData(_model.security_criteria, _get_filter_states(), get_grid_save_state(), rows_view.get_sorting_criteria(columns));

      private Brush _get_aggressor_brush(Row r) {
         BTSColor c;
@@ -82,7 +105,7 @@ namespace mbts.spark {
      public IDataGridColumnPersistentFilter<Row, string> security_key_filter { get; } = new RegexFilterVM<Row>(r => r.security_key.ToString(), nameof(Row.security_key));
      public IDataGridColumnPersistentFilter<Row, string> trade_key_filter { get; } = new RegexFilterVM<Row>(r => r.trade_key.ToString(), nameof(Row.trade_key));

-      public FilterStates get_filter_states() =>
+      FilterStates _get_filter_states() =>
         new FilterStates {
            time = time_filter.get_state(),
            security = security_filter.get_state(),
@@ -18,7 +18,10 @@
  </UserControl.Resources>
  <AdornerDecorator>
    <Grid>
-      <c:DIYGrid Columns="{Binding columns}" Rows="{Binding rows_view}" CurrentRow="{Binding current_row}">
+      <c:DIYGrid Columns="{Binding columns}" 
+                 Rows="{Binding rows_view}" CurrentRow="{Binding current_row}"
+                 SelectionHighlight="{Binding grid_settings_manager.selection_highlight, Mode=OneWay}"
+                 >
        <c:DIYGrid.InputBindings>
          <MouseBinding MouseAction="LeftDoubleClick" Command="{x:Static c:DIYGrid.DefaultRowCommand}"/>
          <KeyBinding Key="Return" Command="{x:Static c:DIYGrid.DefaultRowCommand}"/>
@@ -3,8 +3,11 @@ using bts.api;
 using bts.shell;
 using bts.spark;
 using mbts.co2;
+using mbts.persist;
 using mbts.ui;
+using mbts.ui.settings;
 using mbts.ui.spark;
+using mbts.ui.utility;
 using mbts.utils;
 using System;
 using System.Collections.Generic;
@@ -20,6 +23,7 @@ namespace mbts.spark {
      const string _window_type = "TimeAndSales", _window_type_display_name = "Time And Sales";
      readonly MDConsumer _consumer;
      readonly TimeAndSalesWindowFactory _factory;
+      readonly IWindowSettingsManager<GridSettings> _settings_manager;
      SingleValuePump<TimeAndSalesVM> _vm;
      TimeAndSalesModel _model;
      StartupData _state;
@@ -27,29 +31,25 @@ namespace mbts.spark {
      SparkCommand[] _commands;
      IDisposable _subscriptions;

-      public TimeAndSalesWindow(TimeAndSalesWindowFactory factory, IBus bus, MDConsumer consumer, StartupData state, ImageSource icon)
+      public TimeAndSalesWindow(TimeAndSalesWindowFactory factory, IBus bus, MDConsumer consumer, StartupData state, ImageSource icon, IWindowSettingsManager<GridSettings> settings_manager)
         : base("Time And Sales", bus, factory, SparkCommands.ShowTimeAndSales.icon) {
         Log.assert(state != null);
         _consumer = consumer;
         _factory = factory;
         _state = state;
+         _settings_manager = settings_manager;
         Icon.Freeze();
      }

      public override string window_type => _window_type;
      public override IEnumerable<SparkCommand> Commands => _commands;
      public override UIElement Content => _view;
-      public override double MinWidth => DefaultColumnWidths.Security
-         + DefaultColumnWidths.Time
-         + DefaultColumnWidths.Price
-         + DefaultColumnWidths.Size
-         + DefaultColumnWidths.Aggressor
-         + DefaultColumnWidths.TradeKey
-         + DefaultColumnWidths.SecurityKey
+      public override double MinWidth => StartupData.DefaultGridSettings.columns.Sum(gcs => gcs.width)
         + SPARK_MENU_COLLAPSED_WIDTH
-         + LAUNCHER_BUTTON_BORDER_WIDTH;
-
-      public override StartupData SaveState => _state = new StartupData(_state.security_criteria, _vm.value.rows_view.GetSortingCriteria(), _vm.value.get_filter_states());
+         + LAUNCHER_BUTTON_BORDER_WIDTH
+         + EXTRA_FOR_NO_HORIZONTAL_SCROLLBAR_WIDTH;
+      
+      public override StartupData SaveState => _state = _vm.value.create();

      public override void Dispose() =>
         _dispose_resources();
@@ -66,7 +66,25 @@ namespace mbts.spark {
            SparkCommands.ShowOrderTicketFromSecurity.complete(current_smd_source, md => md.HasValue, ObjectHelper.ValueOrDefault),
            SparkCommands.ShowFills.complete(selected_secs_source, always_true, get_fills_startup_data),
            SparkCommands.ShowMarketView.complete(selected_secs_source, always_true, secs => secs.Count > 0 ? new SecurityCriteria(secs) : _state.security_criteria),
-            SparkCommands.change_securities_command(() => (update_securities_cmd, _state.security_criteria))
+            SparkCommands.change_securities_command(() => (update_securities_cmd, _state.security_criteria)),
+            // wrap the grid settings view factory in a dialogCommand here since the vm is destroyed/recreated when the security criteria changes
+            SparkCommands.window_settings_command(new DialogCommand(() => {
+                   var vm = new WindowSettingsDialogVM<GridSettings, SimpleGridSettingsVM>(
+                  _settings_manager,
+                  s => s.time_and_sales_grid,
+                  UserSettings.FileExtensions.GRID,
+                  s => _vm.value.grid_settings_manager.create_vm(
+                     // we need to get the most up to date GridSettings when launching b/c users may
+                     // have changed some settings on the grid directly, like column widths.
+                     s.with(_vm.value.columns.Select( c => c.create())),
+                     this.observe_title()
+                  )
+               );
+               // TODO: bind to main window's Title
+               var dialog = new SimpleGridSettingsDialog { Title = "Time and Sales Grid Settings", DataContext = vm };
+               vm.RequestClose += (s, e) => WindowUtilities.force_close(dialog);
+               return dialog;
+            }))
         };
         _subscriptions = Disposable.Create(
            _bus.subscribe(update_securities_cmd.tag).OnDispatcher().Subscribe(update_criteria),
@@ -79,7 +97,7 @@ namespace mbts.spark {
               security = secs.Count > 0 ? new SecurityCriteria(secs) : _state.security_criteria
            });
         void update_criteria(SecurityCriteria c) {
-            _state = new StartupData(c, _vm.value.rows_view.GetSortingCriteria(), _vm.value.get_filter_states());
+            _state = _vm.value.create().with(c);
            _initialize();
         }
      }
@@ -98,7 +116,7 @@ namespace mbts.spark {
         Disposable.dispose(ref _model);
         _model = new TimeAndSalesModel(_bus, _consumer, _state.security_criteria);
         // the previous _vm.value is automatically disposed when _vm.value is set - no need to dispose it here
-         _vm.value = new TimeAndSalesVM(_bus, _model, _state.sorting_criteria, _state.filters);
+         _vm.value = new TimeAndSalesVM(_bus, _settings_manager, _model, _state);
         if (_view == null)
            _view = new TimeAndSalesView();
         _view.DataContext = _vm.value;
@@ -2,24 +2,31 @@
 using bts.spark;
 using mbts;
 using mbts.co2;
+using mbts.persist;
 using mbts.spark;
 using mbts.spark.filters;
 using mbts.ui;
+using mbts.ui.settings;
 using ProtoBuf;
 using System;
 using System.Collections.Generic;
+using System.Linq;
 using System.Reactive.Linq;
 using System.Threading.Tasks;
+using static mbts.ui.controls.DIYGrid;
+using static mbts.ui.spark.TimeAndSalesView;

 namespace bts.shell {
   class TimeAndSalesWindowFactory : ShellWindowFactory<TimeAndSalesWindowFactory.StartupData> {
      readonly IBus _bus;
      readonly MDConsumer _consumer;
+      readonly UserSettingsHub _settings_hub;
      IReadOnlyDictionary<uint, SecurityMD> _securities = new Dictionary<uint, SecurityMD>();

-      public TimeAndSalesWindowFactory(IShellModule module, IBus bus, MDConsumer consumer) : base(module, "TimeAndSales") {
+      public TimeAndSalesWindowFactory(IShellModule module, IBus bus, MDConsumer consumer, UserSettingsHub settings_hub) : base(module, "TimeAndSales") {
         _bus = bus;
         _consumer = consumer;
+         _settings_hub = settings_hub;

         _dispose = Disposable.Create(
            bus.subscribe(SparkTags.SecuritiesTag).Subscribe(s => _securities = s),
@@ -27,8 +34,11 @@ namespace bts.shell {
         );
      }

+      public static string col_id(Columns col) => col.ToString();
+
      public override Task<IShellWindow> load(StartupData state) =>
-         Task.FromResult<IShellWindow>(new TimeAndSalesWindow(this, _bus, _consumer, state, SparkCommands.PickTimeAndSales.icon));
+         Task.FromResult<IShellWindow>(new TimeAndSalesWindow(this, _bus, _consumer, state, SparkCommands.PickTimeAndSales.icon,
+            new WindowSettingsManager<GridSettings>(_settings_hub, state.grid, s => s.time_and_sales_grid, (s, g) => s.with(time_and_sales:g))));

      public async void show(SecurityCriteria criteria) {
         var w = await load(new StartupData(criteria));
@@ -40,19 +50,60 @@ namespace bts.shell {
         [ProtoMember(1)]
         public readonly SecurityCriteria security_criteria;
         [ProtoMember(2)]
-         public readonly List<SortingCriteria> sorting_criteria;
+         List<SortingCriteria> _sorting_criterion;
         [ProtoMember(3)]
         public FilterStates filters;
+         [ProtoMember(4)]
+         public GridSettings grid;

-         StartupData() { }//for ptorobuf
+         public StartupData() { }

-         public StartupData(SecurityCriteria security_criteria)
-            : this (security_criteria, new List<SortingCriteria>(), null) { }
+         public StartupData(SecurityCriteria security_criteria) :
+            this(security_criteria, new FilterStates(), null, null) { }

-         public StartupData(SecurityCriteria security_criteria, List<SortingCriteria> sorting_criteria, FilterStates filters) {
+         public StartupData(SecurityCriteria security_criteria, FilterStates filters, GridSettings grid = default, List<SortingCriteria> sorting_criterion = null) {
            this.security_criteria = security_criteria;
-            this.sorting_criteria = sorting_criteria;
            this.filters = filters;
+            this.grid = grid;
+            _sorting_criterion = sorting_criterion;
+         }
+
+         public static GridSettings DefaultGridSettings => GridSettings.Default.with(DefaultColumns.all, DefaultColumns.default_sorting_criterion);
+
+         public List<SortingCriteria> sorting_criterion => _sorting_criterion ?? (_sorting_criterion = DefaultColumns.default_sorting_criterion.ToList());
+
+         public static StartupData Default(SecurityCriteria security_criteria) =>
+           new StartupData(security_criteria, new FilterStates(), null, DefaultColumns.default_sorting_criterion.ToList());
+
+         public StartupData with(SecurityCriteria security_criteria) =>
+            new StartupData(security_criteria, filters, grid);
+
+         public static class DefaultColumns {
+            public static GridColumnSettings security => new GridColumnSettings(col_id(Columns.Security), DefaultColumnHeaders.Security, width: DefaultColumnWidths.Security);
+            public static GridColumnSettings time => new GridColumnSettings(col_id(Columns.Time), DefaultColumnHeaders.Time, width: DefaultColumnWidths.Time);
+            public static GridColumnSettings price => new GridColumnSettings(col_id(Columns.Price), DefaultColumnHeaders.Price, width: DefaultColumnWidths.Price, horizontal_alignment: System.Windows.HorizontalAlignment.Right);
+            public static GridColumnSettings size => new GridColumnSettings(col_id(Columns.Size), DefaultColumnHeaders.Size, width: DefaultColumnWidths.Size, horizontal_alignment: System.Windows.HorizontalAlignment.Right);
+            public static GridColumnSettings aggressor => new GridColumnSettings(col_id(Columns.Aggressor), DefaultColumnHeaders.Aggressor, width: DefaultColumnWidths.Aggressor);
+            public static GridColumnSettings trade_key => new GridColumnSettings(col_id(Columns.TradeKey), DefaultColumnHeaders.TradeKey, width: DefaultColumnWidths.TradeKey);
+            public static GridColumnSettings security_key => new GridColumnSettings(col_id(Columns.SecurityKey), DefaultColumnHeaders.SecurityKey, width: DefaultColumnWidths.SecurityKey);
+
+            public static IEnumerable<SortingCriteria> default_sorting_criterion {
+               get {
+                  yield return new SortingCriteria(time.id, false);
+               }
+            }
+
+            public static IEnumerable<GridColumnSettings> all {
+               get {
+                  yield return security;
+                  yield return time;
+                  yield return price;
+                  yield return size;
+                  yield return aggressor;
+                  yield return trade_key;
+                  yield return security_key;
+               }
+            }
         }
      }

@@ -46,27 +46,22 @@
    Offset="{StaticResource RowHeight}"
    RowHeaderWidth="{StaticResource RowHeaderWidth}"
  />
-  <usp:DataGridParameterCellTemplateConverter x:Key="ParameterCellTemplateConverter">
+  <DataTemplate x:Key="SimpleValueTextTemplate">
+    <TextBlock Text="{Binding value}"/>
+  </DataTemplate>
+  <usp:DataGridParameterCellTemplateConverter
+    x:Key="ParameterCellTemplateConverter"
+    DoubleTemplate="{StaticResource SimpleValueTextTemplate}"
+    IntTemplate="{StaticResource SimpleValueTextTemplate}"
+    UIntTemplate="{StaticResource SimpleValueTextTemplate}"
+    MarketDataTypeTemplate="{StaticResource SimpleValueTextTemplate}"
+    MarketDataCalculationTemplate="{StaticResource SimpleValueTextTemplate}"
+  >
    <usp:DataGridParameterCellTemplateConverter.BooleanTemplate>
      <DataTemplate>
        <CheckBox HorizontalAlignment="Left" IsChecked="{Binding value}"/>
      </DataTemplate>
    </usp:DataGridParameterCellTemplateConverter.BooleanTemplate>
-    <usp:DataGridParameterCellTemplateConverter.DoubleTemplate>
-      <DataTemplate>
-        <TextBlock Text="{Binding value}"/>
-      </DataTemplate>
-    </usp:DataGridParameterCellTemplateConverter.DoubleTemplate>
-    <usp:DataGridParameterCellTemplateConverter.IntTemplate>
-      <DataTemplate>
-        <TextBlock Text="{Binding value}"/>
-      </DataTemplate>
-    </usp:DataGridParameterCellTemplateConverter.IntTemplate>
-    <usp:DataGridParameterCellTemplateConverter.UIntTemplate>
-      <DataTemplate>
-        <TextBlock Text="{Binding value}"/>
-      </DataTemplate>
-    </usp:DataGridParameterCellTemplateConverter.UIntTemplate>
    <usp:DataGridParameterCellTemplateConverter.QuantityMeasureTemplate>
      <DataTemplate>
        <Grid>
@@ -117,6 +112,16 @@
        <c:TickUpDownUInt Value="{Binding value}" IsEnabled="{Binding enabled}"/>
      </DataTemplate>
    </usp:DataGridParameterCellTemplateConverter.UIntTemplate>
+    <usp:DataGridParameterCellTemplateConverter.MarketDataTypeTemplate>
+      <DataTemplate>
+        <ComboBox SelectedItem="{Binding value}" ItemsSource="{u:EnumBindingSource {u:Nested sp:LegSpreaderParams.Types.MarketDataType}}" ItemTemplate="{StaticResource EnumDescriptionTemplate}"/>
+      </DataTemplate>
+    </usp:DataGridParameterCellTemplateConverter.MarketDataTypeTemplate>
+    <usp:DataGridParameterCellTemplateConverter.MarketDataCalculationTemplate>
+      <DataTemplate>
+        <ComboBox SelectedItem="{Binding value}" ItemsSource="{u:EnumBindingSource {u:Nested sp:LegSpreaderParams.Types.LegMarketDataCalculation}}" ItemTemplate="{StaticResource EnumDescriptionTemplate}"/>
+      </DataTemplate>
+    </usp:DataGridParameterCellTemplateConverter.MarketDataCalculationTemplate>
    <usp:DataGridParameterCellTemplateConverter.QuantityMeasureTemplate>
      <DataTemplate>
        <Grid IsEnabled="{Binding enabled}">
@@ -302,6 +302,8 @@ namespace mbts.ui.spark {
      public DataTemplate IntTemplate { get; set; }
      public DataTemplate UIntTemplate { get; set; }
      public DataTemplate QuantityMeasureTemplate { get; set; }
+      public DataTemplate MarketDataTypeTemplate { get; set; }
+      public DataTemplate MarketDataCalculationTemplate { get; set; }

      public object Convert(object value, Type targetType, object parameter, CultureInfo culture) {
         Type t = (Type)value;
@@ -310,6 +312,8 @@ namespace mbts.ui.spark {
         else if (t == typeof(int)) return IntTemplate;
         else if (t == typeof(uint)) return UIntTemplate;
         else if (t == typeof(QuantityMeasure)) return QuantityMeasureTemplate;
+         else if (t == typeof(LegSpreaderParams.Types.MarketDataType)) return MarketDataTypeTemplate;
+         else if (t == typeof(LegSpreaderParams.Types.LegMarketDataCalculation)) return MarketDataCalculationTemplate;
         else return null;
      }

@@ -1,6 +1,7 @@
 using bts.api;
 using bts.spark;
 using mbts;
+using mbts.persist;
 using mbts.spark;
 using mbts.ui;
 using mbts.ui.shell;
@@ -18,8 +19,8 @@ namespace bts.shell
      LatencyReportWindowFactory _lrwf;

      [ImportingConstructor]
-      public SpreaderShellModule(IBus bus, OrdersModel orders_model) {
-         _smwf = new SyntheticManagementWindowFactory(this, bus, orders_model);
+      public SpreaderShellModule(IBus bus, UserSettingsHub settings_hub, OrdersModel orders_model) {
+         _smwf = new SyntheticManagementWindowFactory(this, bus, settings_hub, orders_model);
         _lrwf = new LatencyReportWindowFactory(this, bus);
      }

@@ -1,8 +1,12 @@
-<UserControl x:Class="mbts.ui.spark.SyntheticManagementView" x:ClassModifier="internal"
-             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
-             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
-             xmlns:u="clr-namespace:mbts.ui"
-             xmlns:c="clr-namespace:mbts.ui.controls">
+<UserControl 
+    x:Class="mbts.ui.spark.SyntheticManagementView" 
+    x:ClassModifier="internal"
+    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+    xmlns:usp="clr-namespace:mbts.ui.spark"
+    xmlns:c="clr-namespace:mbts.ui.controls"
+    Background="{StaticResource CommonBackground}"
+ >
  <UserControl.Resources>
    <ResourceDictionary>
      <ResourceDictionary.MergedDictionaries>
@@ -10,71 +14,31 @@
      </ResourceDictionary.MergedDictionaries>
    </ResourceDictionary>
  </UserControl.Resources>
-  <Grid>
-    <c:DataGridEx
-      x:Name="grid" BorderThickness="0" IsReadOnly="True" CanUserSortColumns="True" 
-      GridLinesVisibility="None" ItemsSource="{Binding rows_view}"
-      CurrentItem="{Binding current_row, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"
-    >
-      <DataGrid.RowStyle>
-        <Style TargetType="DataGridRow">
-          <Setter Property="u:AttachedCommands.DoubleClick" Value="{Binding show_ladder}"/>
-          <Setter Property="u:AttachedCommands.Enter" Value="{Binding show_ladder}"/>
-        </Style>
-      </DataGrid.RowStyle>
-      <DataGrid.Columns>
-        <!--<DataGridTextColumn
-          Header="Create Time" Binding="{Binding create_time}"
-          c:DataGridFilterProperties.Filter="{Binding DataContext.create_time_filter, Source={u:DirectReference grid}}"
-          c:DataGridFilterProperties.FilterActive="{Binding DataContext.create_time_filter.active, Source={u:DirectReference grid}}"
-          c:DataGridFilterProperties.FilterTemplate="{StaticResource TimeFilterTemplate}"
-        />-->
-        <DataGridTextColumn
-          Header="Name" Binding="{Binding name}"
-          c:DataGridFilterProperties.Filter="{Binding DataContext.name_filter, Source={u:DirectReference grid}}"
-          c:DataGridFilterProperties.FilterActive="{Binding DataContext.name_filter.active, Source={u:DirectReference grid}}"
-          c:DataGridFilterProperties.FilterOpen="{Binding DataContext.name_filter.open, Source={u:DirectReference grid}}"
-          c:DataGridFilterProperties.FilterTemplate="{StaticResource RegexTemplate}"
-        />
-        <DataGridTextColumn
-          Header="Description" Binding="{Binding description}"
-          c:DataGridFilterProperties.Filter="{Binding DataContext.description_filter, Source={u:DirectReference grid}}"
-          c:DataGridFilterProperties.FilterActive="{Binding DataContext.description_filter.active, Source={u:DirectReference grid}}"
-          c:DataGridFilterProperties.FilterOpen="{Binding DataContext.description_filter.open, Source={u:DirectReference grid}}"
-          c:DataGridFilterProperties.FilterTemplate="{StaticResource RegexTemplate}"
-        />
-        <DataGridTextColumn
-          Header="# Legs" Binding="{Binding n_legs}"
-          c:DataGridFilterProperties.Filter="{Binding DataContext.n_legs_filter, Source={u:DirectReference grid}}"
-          c:DataGridFilterProperties.FilterActive="{Binding DataContext.n_legs_filter.active, Source={u:DirectReference grid}}"
-          c:DataGridFilterProperties.FilterOpen="{Binding DataContext.n_legs_filter.open, Source={u:DirectReference grid}}"
-          c:DataGridFilterProperties.FilterTemplate="{StaticResource IntMinMaxTemplate}"
-        />
-        <DataGridTemplateColumn
-          Header="# Working Orders"
-          c:DataGridFilterProperties.Filter="{Binding DataContext.n_working_orders_filter, Source={u:DirectReference grid}}"
-          c:DataGridFilterProperties.FilterActive="{Binding DataContext.n_working_orders_filter.active, Source={u:DirectReference grid}}"
-          c:DataGridFilterProperties.FilterOpen="{Binding DataContext.n_working_orders_filter.open, Source={u:DirectReference grid}}"
-          c:DataGridFilterProperties.FilterTemplate="{StaticResource IntMinMaxTemplate}"
+  <AdornerDecorator>
+    <Grid>
+      <c:DIYGrid
+          x:Name="_grid"
+          Columns="{Binding columns}"
+          CurrentRow="{Binding current_row}"
+          Rows="{Binding rows_view}"
        >
-          <DataGridTemplateColumn.CellTemplate>
-            <DataTemplate>
-              <TextBlock>
-                <Hyperlink Command="{Binding show_order_book}">
-                  <TextBlock Text="{Binding n_working_orders}"/>
-                </Hyperlink>
-              </TextBlock>
-            </DataTemplate>
-          </DataGridTemplateColumn.CellTemplate>
-        </DataGridTemplateColumn>
-        <DataGridTextColumn
-          Header="Security Key" Binding="{Binding security_key}" Width="*"
-          c:DataGridFilterProperties.Filter="{Binding DataContext.security_key_filter, Source={u:DirectReference grid}}"
-          c:DataGridFilterProperties.FilterActive="{Binding DataContext.security_key_filter.active, Source={u:DirectReference grid}}"
-          c:DataGridFilterProperties.FilterOpen="{Binding DataContext.security_key_filter.open, Source={u:DirectReference grid}}"
-          c:DataGridFilterProperties.FilterTemplate="{StaticResource RegexTemplate}"
-        />
-      </DataGrid.Columns>
-    </c:DataGridEx>
-  </Grid>
+        <c:DIYGrid.InputBindings>
+          <MouseBinding MouseAction="LeftDoubleClick" Command="{x:Static c:DIYGrid.DefaultRowCommand}"/>
+          <KeyBinding Key="Return" Command="{x:Static c:DIYGrid.DefaultRowCommand}"/>
+        </c:DIYGrid.InputBindings>
+        <c:DIYGrid.CommandBindings>
+          <CommandBinding
+              Command="{x:Static c:DIYGrid.DefaultRowCommand}"
+              Executed="{x:Static c:DIYGrid.DefaultRowActionExecuted}"
+              CanExecute="{x:Static c:DIYGrid.DefaultRowActionCanExecute}"
+            />
+        </c:DIYGrid.CommandBindings>
+        <c:DIYGrid.RowTemplate>
+          <DataTemplate>
+            <usp:SyntheticManagementRowView/>
+          </DataTemplate>
+        </c:DIYGrid.RowTemplate>
+      </c:DIYGrid>
+    </Grid>
+  </AdornerDecorator>  
 </UserControl>
@@ -1,12 +1,17 @@
-using mbts.spark.filters;
+using mbts.spark;
+using mbts.ui.controls;
 using System.Windows.Controls;

 namespace mbts.ui.spark {
   /// <summary>
   /// Interaction logic for SyntheticManagementView.xaml
   /// </summary>
-   internal partial class SyntheticManagementView : UserControl {
+   partial class SyntheticManagementView : UserControl {
+
+      public enum Columns { Name, Description, n_legs, n_working_orders, SecurityKey}
      public SyntheticManagementView() =>
         InitializeComponent();
   }
+
+   class SyntheticManagementRowView : DIYGrid.HighPerformanceRow<SyntheticManagementDialogVM.Row, SyntheticManagementView.Columns> { }
 }
@@ -2,8 +2,11 @@
 using bts.api;
 using bts.shell;
 using bts.spark;
+using mbts.persist;
 using mbts.ui;
+using mbts.ui.settings;
 using mbts.ui.spark;
+using mbts.ui.utility;
 using mbts.utils;
 using System;
 using System.Collections.Generic;
@@ -13,27 +16,33 @@ using System.Windows;
 using static bts.shell.SyntheticManagementWindowFactory;

 namespace mbts.spark {
-   class SyntheticManagementWindow : SparkWindow<StartupData> {
+   class SyntheticManagementWindow : SparkWindow<StartupData>, ISlowWindow {
      const string _window_type = "SyntheticManagement";
      SingleValuePump<SyntheticManagementDialogVM> _vm = new SingleValuePump<SyntheticManagementDialogVM>();
      StartupData _state;
      OrdersModel _orders_model;
      SyntheticManagementView _view;
      IDisposable _subscriptions;
+      IReadOnlyList<SparkCommand> _commands;
+      readonly IWindowSettingsManager<GridSettings> _settings_manager;

-      public static SyntheticManagementWindow create(SyntheticManagementWindowFactory factory, IBus bus, OrdersModel orders_model, StartupData state) {
-         var window = new SyntheticManagementWindow(factory, bus, orders_model);
-         window.initialize(state);
-         return window;
-      }

-      SyntheticManagementWindow(SyntheticManagementWindowFactory factory, IBus bus, OrdersModel orders_model)
+      public SyntheticManagementWindow(SyntheticManagementWindowFactory factory, IBus bus, OrdersModel orders_model, StartupData state, WindowSettingsManager<GridSettings> settings_manager)
         : base("Synthetic Management", bus, factory, SparkCommands.ShowSyntheticManagement.icon) {
         _orders_model = orders_model;
+         _state = state;
+         _settings_manager = settings_manager;
+         Icon.Freeze();
+      }
+
+      public void thread_init() {
+         Log.notnull(_state);
+
         var vm_connectable_builder = new ConnectableSeriesBuilder<SyntheticManagementDialogVM>(_vm.observable);
         var current_row_source = vm_connectable_builder.create(vm => vm.current_row_observable);
         var current_row_connectable_builder = new ConnectableSeriesBuilder<SyntheticManagementDialogVM.Row>(current_row_source);
-         Commands = new SparkCommand[] {
+
+         _commands = new SparkCommand[] {
            SparkCommand.create("Add", Icons.AddSynthetic, SparkTags.ShowSyntheticCreateTag).complete(
               () => new SecurityCriteria(), () => true
            ), SparkCommand.create("Remove", Icons.RemoveSynthetic, SparkTags.SyntheticDeleteTag).complete(
@@ -51,7 +60,24 @@ namespace mbts.spark {
                  filters = new OrderBookWindowFactory.FilterStates {
                     security_criteria = new SecurityCriteria(_vm.value.row_vms.Select(r => r.security))
                  }
-               })
+               }
+            ), SparkCommands.window_settings_command(new DialogCommand(() => {
+               var vm = new WindowSettingsDialogVM<GridSettings, SimpleGridSettingsVM>(
+                  _settings_manager,
+                  us => us.synthetic_management_grid,
+                  UserSettings.FileExtensions.GRID,
+                  s => _vm.value.grid_settings_manager.create_vm(
+                     // we need to get the most up to date GridSettings when launching b/c users may
+                     // have changed some settings on the grid directly, like column widths.
+                     s.with(_vm.value.columns.Select( c => c.create())),
+                     this.observe_title()
+                  )
+               );
+               // TODO: bind to main window's Title
+               var dialog = new SimpleGridSettingsDialog { Title = "Synthetic Management Grid Settings", DataContext = vm };
+               vm.RequestClose += (s, e) => WindowUtilities.force_close(dialog);
+               return dialog;
+            }))
         };

         _subscriptions = Disposable.Create(
@@ -69,21 +95,21 @@ namespace mbts.spark {
         uint select_security_id(RowModificationParams? rmp) => rmp.HasValue ? rmp.Value.security.Id : 0;
         (SecurityImmutable, ExecutionStrategyImmutable) select_row_strategy_tuple(RowStrategy? rs) => rs.HasValue ? (rs.Value.security, rs.Value.strategy) : default;
         bool can_execute(RowModificationParams? rmp) => rmp.HasValue && !rmp.Value.has_working_orders;
-      }
- 
-      public void initialize(StartupData state) {
-         Log.notnull(state);
-         _state = state;
-         _vm.value = new SyntheticManagementDialogVM(_bus, _orders_model, state.sorting_criteria, state.filters ?? new FilterStates());
+
+         _vm.value = new SyntheticManagementDialogVM(_bus, _orders_model, _settings_manager, _state.sorting_criteria, _state.filters ?? new FilterStates());
         if (_view == null) _view = new SyntheticManagementView { DataContext = _vm.value };
         else _view.DataContext = _vm.value;
      }

      public override string window_type => _window_type;
      public override UIElement Content => _view;
-      public override IEnumerable<SparkCommand> Commands { get; }
-      public override StartupData SaveState => _state = new StartupData(_vm.value.rows_view.GetSortingCriteria(), _vm.value.get_filter_states());
-      public override double MinWidth => 700;
+      public override IEnumerable<SparkCommand> Commands => _commands;
+      public override StartupData SaveState => _state = _vm.value.create();
+      public override double MinWidth => 
+         StartupData.DefaultGridSettings.columns.Sum(gcs => gcs.width)
+         + SPARK_MENU_COLLAPSED_WIDTH
+         + LAUNCHER_BUTTON_BORDER_WIDTH
+         + EXTRA_FOR_NO_HORIZONTAL_SCROLLBAR_WIDTH;

      public override void Dispose() {
         Disposable.dispose(ref _vm);
@@ -1,30 +1,46 @@
 using bts.api;
+using mbts.persist;
 using mbts.spark;
 using mbts.spark.filters;
 using mbts.ui;
+using mbts.ui.settings;
 using ProtoBuf;
 using System;
 using System.Collections.Generic;
 using System.Reactive.Linq;
 using System.Threading.Tasks;
+using static mbts.ui.controls.DIYGrid;
+using static mbts.ui.spark.SyntheticManagementView;

 namespace bts.shell {
   class SyntheticManagementWindowFactory : ShellWindowFactory<SyntheticManagementWindowFactory.StartupData> {
      readonly IBus _bus;
      readonly OrdersModel _orders_model;
+      readonly UserSettingsHub _settings_hub;

-      public SyntheticManagementWindowFactory(SpreaderShellModule module, IBus bus, OrdersModel orders_model) : base(module, "SyntheticManagement") {
+      public SyntheticManagementWindowFactory(SpreaderShellModule module, IBus bus, UserSettingsHub settings_hub, OrdersModel orders_model) : base(module, "SyntheticManagement") {
         _bus = bus;
         _orders_model = orders_model;
+         _settings_hub = settings_hub;
         _dispose = bus.subscribe(SparkTags.ShowSyntheticManagementTag).OnDispatcher().Subscribe(show);
      }

+      public static string col_id(Columns col) => col.ToString();
+
      public override Task<IShellWindow> load(StartupData state) =>
-         Task.FromResult<IShellWindow>(SyntheticManagementWindow.create(this, _bus, _orders_model, state));
+         Task.FromResult<IShellWindow>(_create(state));

      public async void show(SparkTags.Nothing nothing) =>
         _bus.post(SparkTags.ShowWindow, await load(new StartupData()));

+      IShellWindow _create(StartupData state) {
+         var settings_manager = new WindowSettingsManager<GridSettings>(_settings_hub,
+            state.grid,
+            get: us => us.synthetic_management_grid,
+            set: (us, gs) => us.with(provided_synthetic_management_gridsettings: gs));
+         return new SyntheticManagementWindow(this, _bus, _orders_model, state, settings_manager);
+      }
+
      [ProtoContract]
      public class StartupData {
         public const int Version = 1;
@@ -33,11 +49,41 @@ namespace bts.shell {
         public readonly List<SortingCriteria> sorting_criteria;
         [ProtoMember(2)]
         public readonly FilterStates filters;
+         [ProtoMember(3)]
+         public readonly GridSettings grid;

-         public StartupData() : this(new List<SortingCriteria>(), null) { }
-         public StartupData(List<SortingCriteria> sorting_criteria, FilterStates filters) {
+         public StartupData() : this(new List<SortingCriteria>(), null, null) { }
+         public StartupData(List<SortingCriteria> sorting_criteria, FilterStates filters, GridSettings grid = default) {
            this.sorting_criteria = sorting_criteria;
            this.filters = filters;
+            this.grid = grid;
+         }
+
+         public static GridSettings DefaultGridSettings => GridSettings.Default.with(DefaultColumns.all, DefaultColumns.default_sorting_criterion);
+
+         static class DefaultColumns {
+            public static GridColumnSettings name => new GridColumnSettings(col_id(Columns.Name), DefaultColumnHeaders.Name, width: DefaultColumnWidths.Security);
+            public static GridColumnSettings description => new GridColumnSettings(col_id(Columns.Description), DefaultColumnHeaders.Description, width: DefaultColumnWidths.Description);
+            public static GridColumnSettings n_legs => new GridColumnSettings(col_id(Columns.n_legs), DefaultColumnHeaders.N_Legs, width: DefaultColumnWidths.N_Legs);
+            public static GridColumnSettings n_working_orders => new GridColumnSettings(col_id(Columns.n_working_orders), DefaultColumnHeaders.N_Working_Orders, width: DefaultColumnWidths.N_Working_Orders);
+            public static GridColumnSettings security_key => new GridColumnSettings(col_id(Columns.SecurityKey), DefaultColumnHeaders.SecurityKey, width: DefaultColumnWidths.SecurityKey);
+
+            public static IEnumerable<SortingCriteria> default_sorting_criterion {
+               get {
+                  yield return new SortingCriteria(name.id, true);
+               }
+            }
+
+            public static IEnumerable<GridColumnSettings> all {
+               get {
+                  yield return name;
+                  yield return description;
+                  yield return n_legs;
+                  yield return n_working_orders;
+                  yield return security_key;
+               }
+            }
+
         }
      }

@@ -0,0 +1,18 @@
+using mbts.ui.spark;
+using LegMarketDataCalculation = bts.spark.LegSpreaderParams.Types.LegMarketDataCalculation;
+
+namespace mbts.spark {
+   partial class SyntheticEditorVM {
+      class MarketDataCalculationModel : RowModelBase<LegMarketDataCalculation> {
+         public override string display_name { get; } = "Market Data Calculation";
+         public override string help_text { get; }
+         public override string man_page { get; } = string.Empty;
+
+         public override LegMarketDataCalculation get_value(LegSpreaderParamsTuple leg_tup) =>
+            leg_tup.leg_params.LegMdCalc;
+
+         public override void set_value(LegSpreaderParamsTuple leg_tup, LegMarketDataCalculation value) =>
+            leg_tup.leg_params.LegMdCalc = value;
+      }
+   }
+}
@@ -0,0 +1,18 @@
+using mbts.ui.spark;
+using MarketDataType = bts.spark.LegSpreaderParams.Types.MarketDataType;
+
+namespace mbts.spark {
+   partial class SyntheticEditorVM {
+      class MarketDataTypeModel : RowModelBase<MarketDataType> {
+         public override string display_name { get; } = "Market Data Type";
+         public override string help_text { get; }
+         public override string man_page { get; } = string.Empty;
+
+         public override MarketDataType get_value(LegSpreaderParamsTuple leg_tup) =>
+            leg_tup.leg_params.MarketDataType;
+
+         public override void set_value(LegSpreaderParamsTuple leg_tup, MarketDataType value) =>
+            leg_tup.leg_params.MarketDataType = value;
+      }
+   }
+}
@@ -203,6 +203,8 @@ namespace mbts.spark {
            new IsQuoteModel(),
            new HedgeRatioModel(),
            new QuoteHiddenModel(),
+            new MarketDataTypeModel(),
+            //new MarketDataCalculationModel(),
            new QuoteThrottleEnabledModel(quote_throttle_inside_ticks, quote_throttle_outside_ticks),
            quote_throttle_inside_ticks,
            quote_throttle_outside_ticks,
@@ -1,22 +1,31 @@
 using bts.api;
 using bts.shell;
 using bts.spark;
+using mbts.persist;
 using mbts.spark.filters;
 using mbts.ui;
+using mbts.ui.controls;
+using mbts.ui.settings;
 using System;
 using System.Collections.Generic;
+using System.Collections.ObjectModel;
 using System.Linq;
 using System.Reactive.Linq;
+using System.Windows.Data;
 using System.Windows.Input;
 using static bts.shell.SyntheticManagementWindowFactory;
+using static mbts.ui.controls.DIYGrid;
+using static mbts.ui.spark.SyntheticManagementView;

 namespace mbts.spark {
   class SyntheticManagementDialogVM : SecurityMDGrid<SyntheticManagementDialogVM.Row, (ExecutionStrategyImmutable? strategy, SecurityMD md)> {
      readonly IBus _bus;
      readonly OrdersModel _orders_model;
+      IWindowSettingsManager<GridSettings> _settings_manager;

-      public SyntheticManagementDialogVM(IBus bus, OrdersModel orders_model) : this(bus, orders_model, null, null) { }
-      public SyntheticManagementDialogVM(IBus bus, OrdersModel orders_model, IReadOnlyCollection<SortingCriteria> sorting, FilterStates filters)
+
+      public SyntheticManagementDialogVM(IBus bus, OrdersModel orders_model, IWindowSettingsManager<GridSettings> settings_manager) : this(bus, orders_model, settings_manager, null, null) { }
+      public SyntheticManagementDialogVM(IBus bus, OrdersModel orders_model, IWindowSettingsManager<GridSettings> settings_manager, IReadOnlyCollection<SortingCriteria> sorting, FilterStates filters)
         : base(orders_model.spreader.strategy_tuple.Select(map => map.Values), sorting) {
         _bus = bus;
         _orders_model = orders_model;
@@ -28,7 +37,41 @@ namespace mbts.spark {
            n_working_orders_filter.load_state(filters.n_working_orders);
 			security_key_filter.load_state(filters.security_key);
         }
-         _dispose = DataGridFilterHelper.hook_filters(rows_view, create_time_filter, name_filter, description_filter, n_legs_filter, n_working_orders_filter, security_key_filter);
+         _settings_manager = settings_manager;
+         // columns
+         add_col(Columns.Name, DefaultColumnHeaders.Name, r => r.name, nameof(Row.name), name_filter, DataGridFilterKnownTemplates.Regex, DefaultColumnWidths.Security);
+         add_col(Columns.Description, DefaultColumnHeaders.Description, r => r.description, nameof(Row.description), description_filter, DataGridFilterKnownTemplates.Regex, DefaultColumnWidths.Description);
+         add_col(Columns.n_legs, DefaultColumnHeaders.N_Legs, r => r.n_legs.ToString(), nameof(Row.n_legs), n_legs_filter, DataGridFilterKnownTemplates.IntMinMax, DefaultColumnWidths.N_Legs);
+         columns.Add(new HyperlinkElementColumn<Row, Columns>(
+            Columns.n_working_orders, 
+            new Binding(nameof(Row.n_working_orders)), 
+            new Binding(nameof(Row.show_order_book)),
+            n_working_orders_filter,
+            DataGridFilterKnownTemplates.UIntMinMax) {
+               id = col_id(Columns.n_working_orders),
+               Header = DefaultColumnHeaders.N_Working_Orders,
+               Width = DefaultColumnWidths.N_Working_Orders
+            }
+         );
+         add_col(Columns.SecurityKey, DefaultColumnHeaders.SecurityKey, r => r.security_key.ToString(), nameof(Row.security_key), security_key_filter, DataGridFilterKnownTemplates.Regex, DefaultColumnWidths.SecurityKey);
+
+         //
+         void add_col(Columns col_key, string header, Func<Row, string> get_text, string prop, IDataGridColumnFilter filter, string filter_template, double width) =>
+            columns.Add(new RenderTextColumn<Row, Columns>(col_key, get_text, filter, filter_template) {
+               id = col_id(col_key),
+               Header = header,
+               sort_member_path = prop,
+               Width = width
+            });
+         //
+         grid_settings_manager = new SimpleGridSettingsManager<Row>(columns, new Dictionary<string, GridColumnSettingsFeatureFlags> { }, row_vms);
+         // this will initialize the immutable properties that correspond to the col_settings_flags above (e.g. Bid/Ask font_color_override, etc.)
+         grid_settings_manager.load_from(settings_manager.current_settings());
+
+         _resources.AddRange(
+            DataGridFilterHelper.hook_filters(rows_view, create_time_filter, name_filter, description_filter, n_legs_filter, n_working_orders_filter, security_key_filter),
+            settings_manager.subscribe_current().OnDispatcher().Subscribe(grid_settings_manager)
+         );
      }

      protected override Row row_factory((ExecutionStrategyImmutable? strategy, SecurityMD md) row_model) =>
@@ -36,6 +79,20 @@ namespace mbts.spark {

      protected override void on_row_removed(Row row) => row.Dispose();

+      public ObservableCollection<ColumnBase> columns { get; } =  new ObservableCollection<ColumnBase>();
+      public SimpleGridSettingsManager<Row> grid_settings_manager { get; }
+
+      public GridSettings get_grid_save_state() {
+         if (_settings_manager.instance_settings == null)
+            return null;
+         else
+            return grid_settings_manager.create();
+      }
+
+      public StartupData create() =>
+         new StartupData(rows_view.get_sorting_criteria(columns), _get_filter_states(), get_grid_save_state());
+
+
      #region Filters
      public IDataGridColumnPersistentFilter<Row, TimeFilterTuple> create_time_filter { get; } = new TimeFilterVM<Row>(r => r.create_time, nameof(Row.create_time));
      public IDataGridColumnPersistentFilter<Row, string> name_filter { get; } = new RegexFilterVM<Row>(r => r.name, nameof(Row.name));
@@ -44,7 +101,7 @@ namespace mbts.spark {
      public IDataGridColumnPersistentFilter<Row, UIntMinMaxState> n_working_orders_filter { get; } = new UIntMinMax<Row>(r => r.n_working_orders, nameof(Row.n_legs));
      public IDataGridColumnPersistentFilter<Row, string> security_key_filter { get; } = new RegexFilterVM<Row>(r => r.security_key.ToString(), nameof(Row.security_key));

-      public FilterStates get_filter_states() =>
+      FilterStates _get_filter_states() =>
         new FilterStates {
            description = description_filter.get_state(),
            create_time = create_time_filter.get_state(),
@@ -55,7 +112,7 @@ namespace mbts.spark {
         };
      #endregion

-      public class Row : SecurityMDRow, IEquatable<Row> {
+      public class Row : SecurityMDRow, IEquatable<Row>, IRowVM, IActionableRowVM {
         public readonly ExecutionStrategyImmutable? strategy;

         readonly IBus _bus;
@@ -85,6 +142,17 @@ namespace mbts.spark {
         public uint n_working_orders => _n_working_orders.Value;
         public ICommand show_ladder { get; }
         public ICommand show_order_book { get; }
+         public ICommand default_command => show_ladder;
+
+
+         public ObservableCollection<RowAnimation> row_animations => new ObservableCollection<RowAnimation>();
+
+         public IReadOnlyList<IGridCellStore> cell_stores => new IGridCellStore[0];
+
+
+         public event Action invalidated;
+
+         public void raise_invalidated() => invalidated?.Invoke();

         public bool Equals(Row other) =>
            other != null &&
@@ -96,6 +164,8 @@ namespace mbts.spark {
         public override int GetHashCode() =>
            security_key.GetHashCode();

+
+
         void _show_ladder() =>
            _bus.post(SparkTags.ShowLadderTag, md);

@@ -1,6 +1,7 @@
 using bts.api;
 using bts.api.orderman;
 using bts.spark;
+using mbts.persist;
 using mbts.spark.filters;
 using mbts.spark.utilities;
 using mbts.ui;
@@ -13,6 +14,7 @@ using System.Collections.Generic;
 using System.Collections.ObjectModel;
 using System.Linq;
 using System.Reactive.Linq;
+using System.Reactive.Subjects;
 using System.Windows.Data;
 using static bts.api.orderman.Fill.Types;
 using static bts.shell.FillsWindowFactory;
@@ -23,13 +25,16 @@ using OrderType = bts.api.orderman.CustomOrderDefinition.CustomOneofCase;
 namespace mbts.spark {
   class FillsVM : SecurityGrid<FillsVM.Row, FillTuple> {
      readonly OrdersModel _model;
- 
-      public FillsVM(IBus bus, OrdersModel model, StartupData state)
-         : this(bus, model, _get_observable(bus, model, state), state.sorting_criteria, state.filters) { }
+      IWindowSettingsManager<GridSettings> _settings_manager;

-      FillsVM(IBus bus, OrdersModel model, IObservable<IIncrementalUpdate<FillTuple, FillTupleKey>> fills_source, IReadOnlyCollection<SortingCriteria> sorting_criteria, FilterStates filters)
-         : base(RXCollection.CreateIncrementalUpdate(fills_source), sorting_criteria) {
+
+      public FillsVM(IBus bus, OrdersModel model, IObservable<StartupData> state_obs, IWindowSettingsManager<GridSettings> settings_manager)
+         : this(bus, model, state_obs, _get_observable(bus, model, state_obs), settings_manager) { }
+
+      FillsVM(IBus bus, OrdersModel model, IObservable<StartupData> state_obs, IConnectableObservable<IIncrementalUpdate<FillTuple, FillTupleKey>> fills_source, IWindowSettingsManager<GridSettings> settings_manager)
+         : base(RXCollection.CreateIncrementalUpdate(fills_source), null) {
         _model = model;
+         _settings_manager = settings_manager;
         account_filter = DiscreteValuesFilterVM.Create<Row, string>(_model.factory.subscribe_accounts().Select(d => d.Values), r => r.account, nameof(Row.account));
         user_filter = DiscreteValuesFilterVM.Create<Row, string>(_model.factory.subscribe_users().Select(d => d.Values), r => r.user, nameof(Row.user));
         security_filter = DiscreteValuesFilterVM.Create<Row, SecurityImmutable, SecurityCriteria>(
@@ -44,30 +49,6 @@ namespace mbts.spark {
            SecurityDataHelper.EqualityComparer.IDComparer,
            Comparer<SecurityImmutable>.Default
         );
-         if (filters != null) {
-            fill_time_filter.load_state(filters.fill_time);
-            time_in_force_filter.load_state(filters.time_in_force);
-            order_type_filter.load_state(filters.order_type);
-            account_filter.load_state(filters.account);
-            user_filter.load_state(filters.user);
-            exchange_filter.load_state(filters.exchange);
-            security_filter.load_state(filters.security);
-            side_filter.load_state(filters.side);
-            price_filter.load_state(filters.price);
-            size_filter.load_state(filters.size);
-            fill_kind_filter.load_state(filters.fill_kind);
-            fill_key_filter.load_state(filters.fill_key);
-            order_key_filter.load_state(filters.order_key);
-            security_key_filter.load_state(filters.security_key);
-         } else {
-            fill_time_filter.load_state(
-               new TimeFilterTuple(ui.controls.TimeFilterMode.CMEOpen,
-                  TimeTextTuple.FromDateTime(DateTime.Today),
-                  TimeTextTuple.FromDateTime(DateTime.Today.AddDays(1))
-               )
-            );
-            fill_kind_filter.load_state(EnumHelper.get_values_except(FillKind.Sod).ToArray());
-         }
         // columns
         add_col(Columns.Security, DefaultColumnHeaders.Security, r => r.security.ToString(), nameof(Row.security), security_filter, DataGridFilterKnownTemplates.DiscreteValues, DefaultColumnWidths.Security);
         add_col(Columns.FillTime, DefaultColumnHeaders.FillTime, r => r.fill_time.ToString("M/d h:mm:ss tt"), nameof(Row.fill_time), fill_time_filter, DataGridFilterKnownTemplates.TimeFilter, DefaultColumnWidths.Time);
@@ -75,30 +56,83 @@ namespace mbts.spark {
         add_col(Columns.Account, DefaultColumnHeaders.Account, r => r.account, nameof(Row.account), account_filter, DataGridFilterKnownTemplates.DiscreteValues, DefaultColumnWidths.Account);
         add_col(Columns.Exchange, DefaultColumnHeaders.Exchange, r => r.exchange.ToString(), nameof(Row.exchange), exchange_filter, DataGridFilterKnownTemplates.DiscreteValues, DefaultColumnWidths.Exchange);
         add_col(Columns.TimeInForce, DefaultColumnHeaders.TimeInForce, r => r.time_in_force.ToString(), nameof(Row.time_in_force), time_in_force_filter, DataGridFilterKnownTemplates.DiscreteValues, DefaultColumnWidths.TimeInForce);
-         columns.Add(new OrderTypeColumn<Columns>(Columns.OrderType, new Binding(nameof(Row.order_type)), new Binding(nameof(Row.order_metadata)), order_type_filter) { sort_member_path = nameof(Row.order_type) });
-         columns.Add(new SideColumn<Row, Columns>(Columns.Side, r => r.side, side_filter) { sort_member_path = nameof(Row.side) });
+         columns.Add(new OrderTypeColumn<Columns>(Columns.OrderType, new Binding(nameof(Row.order_type)), new Binding(nameof(Row.order_metadata)), order_type_filter) { id = col_id(Columns.OrderType), sort_member_path = nameof(Row.order_type) });
+         columns.Add(new SideColumn<Row, Columns>(Columns.Side, r => r.side, side_filter) { id = col_id(Columns.Side), sort_member_path = nameof(Row.side) });
         add_col(Columns.Size, DefaultColumnHeaders.Size, r => r.size.ToString(), nameof(Row.size), size_filter, DataGridFilterKnownTemplates.UIntMinMax, DefaultColumnWidths.Size);
         add_col(Columns.Price, DefaultColumnHeaders.Price, r => r.format_price(r.price), nameof(Row.price), price_filter, DataGridFilterKnownTemplates.DoubleMinMax, DefaultColumnWidths.Price);
-         add_col(Columns.FillKind, "Fill Kind", r => r.fill_kind.ToString(), nameof(Row.fill_kind), fill_kind_filter, DataGridFilterKnownTemplates.DiscreteValues, 70);
+         add_col(Columns.FillKind, DefaultColumnHeaders.FillKind, r => r.fill_kind.ToString(), nameof(Row.fill_kind), fill_kind_filter, DataGridFilterKnownTemplates.DiscreteValues, DefaultColumnWidths.FillKind);
         add_col(Columns.FillKey, DefaultColumnHeaders.FillKey, r => r.fill_key.ToString(), nameof(Row.fill_key), fill_key_filter, DataGridFilterKnownTemplates.Regex, DefaultColumnWidths.FillKey);
         add_col(Columns.OrderKey, DefaultColumnHeaders.OrderKey, r => r.order_key.ToString(), nameof(Row.order_key), order_key_filter, DataGridFilterKnownTemplates.Regex, DefaultColumnWidths.OrderKey);
         add_col(Columns.SecurityKey, DefaultColumnHeaders.SecurityKey, r => r.security_key.ToString(), nameof(Row.security_key), security_key_filter, DataGridFilterKnownTemplates.Regex, DefaultColumnWidths.SecurityKey);
         //
         void add_col(Columns col_key, string header, Func<Row, string> get_text, string prop, IDataGridColumnFilter filter, string filter_template, double width) =>
-            columns.Add(new RenderTextColumn<Row, Columns>(col_key, get_text, filter, filter_template) {
+            columns.Add(new RenderTextColumn<Row, Columns>(col_key, get_text, filter, filter_template) { 
+               id = col_id(col_key),
               Header = header,
               sort_member_path = prop,
               Width = width
            });
+         grid_settings_manager = new SimpleGridSettingsManager<Row>(columns, new Dictionary<string, GridColumnSettingsFeatureFlags> { }, row_vms);
+         // this will initialize the immutable properties that correspond to the col_settings_flags above (e.g. Bid/Ask font_color_override, etc.)
+         grid_settings_manager.load_from(settings_manager.current_settings());
+
         //
-         _resources.Add(DataGridFilterHelper.hook_filters(rows_view,
-            fill_time_filter, time_in_force_filter, order_type_filter, account_filter, user_filter, exchange_filter,
-            security_filter, side_filter, price_filter, size_filter, fill_kind_filter, fill_key_filter, order_key_filter, security_key_filter
-         ));
+         _resources.AddRange(
+            state_obs.OnDispatcher().Subscribe(s =>
+            {
+               using (rows_view.DeferRefresh()) {
+                  if (s.grid != null) {
+                     // this means we are not using defaults,
+                     // Note: settings_manager in turn notifies grid_settings_manager of this update
+                     _settings_manager.instance_settings = s.grid;
+                  }
+                  if (s.filters is FilterStates filters) {
+                     fill_time_filter.load_state(filters.fill_time);
+                     time_in_force_filter.load_state(filters.time_in_force);
+                     order_type_filter.load_state(filters.order_type);
+                     account_filter.load_state(filters.account);
+                     user_filter.load_state(filters.user);
+                     exchange_filter.load_state(filters.exchange);
+                     security_filter.load_state(filters.security);
+                     side_filter.load_state(filters.side);
+                     price_filter.load_state(filters.price);
+                     size_filter.load_state(filters.size);
+                     fill_kind_filter.load_state(filters.fill_kind);
+                     fill_key_filter.load_state(filters.fill_key);
+                     order_key_filter.load_state(filters.order_key);
+                     security_key_filter.load_state(filters.security_key);
+                  } else {
+                     fill_time_filter.load_state(
+                        new TimeFilterTuple(ui.controls.TimeFilterMode.CMEOpen,
+                           TimeTextTuple.FromDateTime(DateTime.Today),
+                           TimeTextTuple.FromDateTime(DateTime.Today.AddDays(1))
+                        )
+                     );
+                     fill_kind_filter.load_state(EnumHelper.get_values_except(FillKind.Sod).ToArray());
+                  }
+                  rows_view.set_sort_descriptions(s.sorting_criterion, columns);
+               }
+            }),
+            DataGridFilterHelper.hook_filters(rows_view,
+               fill_time_filter, time_in_force_filter, order_type_filter, account_filter, user_filter, exchange_filter,
+               security_filter, side_filter, price_filter, size_filter, fill_kind_filter, fill_key_filter, order_key_filter, security_key_filter
+            ),
+            settings_manager.subscribe_current().OnDispatcher().Subscribe(grid_settings_manager),
+            fills_source.Connect()
+         );
      }

      public ObservableCollection<ColumnBase> columns { get; } = new ObservableCollection<ColumnBase>();

+      public SimpleGridSettingsManager<Row> grid_settings_manager { get; }
+
+      public GridSettings get_grid_save_state() {
+         if (_settings_manager.instance_settings == null)
+            return null;
+         else
+            return grid_settings_manager.create();
+      }
+
      #region Filters
      public IDataGridColumnPersistentFilter<Row, TimeFilterTuple> fill_time_filter { get; } = new TimeFilterVM<Row>(r => r.fill_time, nameof(Row.fill_time));
      public IDataGridColumnPersistentFilter<Row, TimeInForce[]> time_in_force_filter { get; } = DiscreteValuesFilterVM.Create<Row, TimeInForce>(EnumHelper.get_values<TimeInForce>().ToLArray(), r => r.time_in_force, nameof(Row.time_in_force));
@@ -144,6 +178,9 @@ namespace mbts.spark {
         } else return model.on_fill_tuples;
      }

+      static IConnectableObservable<IIncrementalUpdate<FillTuple, FillTupleKey>> _get_observable(IBus bus, OrdersModel model, IObservable<StartupData> state) =>
+         state.SelectManyInSeries(s => _get_observable(bus, model, s));
+
      public class Row : SecurityRow, IEquatable<Row>, IRowVM {
         readonly OrdersModel _model;
         readonly FillImmutable _fill;
@@ -2,9 +2,16 @@
 using bts.api;
 using bts.shell;
 using bts.spark;
+using mbts.persist;
 using mbts.ui;
+using mbts.ui.settings;
 using mbts.ui.spark;
+using mbts.ui.utility;
 using mbts.utils;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Reactive.Linq;
 using System.Windows;
 using StartupData = bts.shell.FillsWindowFactory.StartupData;

@@ -13,29 +20,76 @@ namespace mbts.spark {
      const string _window_type = "Fills", _thread_id = "Fills";
      readonly AllowOnce _init_guard = new AllowOnce("Fills");
      readonly OrdersModel _orders_model;
+      readonly IWindowSettingsManager<GridSettings> _settings_manager;
      FillsVM _vm;
      FillsView _view;
      StartupData _state;
+      IReadOnlyList<SparkCommand> _commands;
+      IDisposable _subscriptions;

-      public FillsWindow(FillsWindowFactory factory, IBus bus, OrdersModel orders_model, StartupData state)
+      public FillsWindow(FillsWindowFactory factory, IBus bus, OrdersModel orders_model, StartupData state, WindowSettingsManager<GridSettings> settings_manager)
         : base("Fills", bus, factory, SparkCommands.ShowFills.icon) {
         _orders_model = orders_model;
         _state = state;
+         _settings_manager = settings_manager;
      }

+      event Action<FillsWindowFactory.StartupData> _state_changed;
+
      public override string window_type => _window_type;
      public override UIElement Content => _view;
-      public override StartupData SaveState => _state = new StartupData(_state.orders, _vm.rows_view.GetSortingCriteria(), _vm.get_filters());
-      public override double MinWidth => 1050 + SPARK_MENU_COLLAPSED_WIDTH + LAUNCHER_BUTTON_BORDER_WIDTH;
+      public override IEnumerable<SparkCommand> Commands => _commands;
+
+      public override StartupData SaveState => _state = new StartupData(_state.orders, _vm.rows_view.get_sorting_criteria(_vm.columns), _vm.get_filters(), _vm.get_grid_save_state());
+      public override double MinWidth =>
+         StartupData.DefaultGridSettings.columns.Sum(gcs => gcs.width)
+         + SPARK_MENU_COLLAPSED_WIDTH
+         + LAUNCHER_BUTTON_BORDER_WIDTH
+         + EXTRA_FOR_NO_HORIZONTAL_SCROLLBAR_WIDTH;
+
      public string thread_id => _thread_id;

      public void thread_init() {
         _init_guard.check_access();
         Log.notnull(_state);
-         _vm = new FillsVM(_bus, _orders_model, _state);
+         var state_src = Observable.FromEvent<Action<FillsWindowFactory.StartupData>, FillsWindowFactory.StartupData>(cb => _state_changed += cb, cb => _state_changed -= cb).StartWith(_state);
+         _vm = new FillsVM(_bus, _orders_model, state_src, _settings_manager);
         _view = new FillsView { DataContext = _vm };
+
+         _commands = new List<SparkCommand> {
+            // wrap the grid settings view factory in a dialogCommand here since the vm is destroyed/recreated when the security criteria changes
+            SparkCommands.window_settings_command(new DialogCommand(() => {
+               var vm = new WindowSettingsDialogVM<GridSettings, SimpleGridSettingsVM>(
+                  _settings_manager, 
+                  us => us.fills_grid, 
+                  UserSettings.FileExtensions.GRID,
+                  s => _vm.grid_settings_manager.create_vm(
+                     // we need to get the most up to date GridSettings when launching b/c users may
+                     // have changed some settings on the grid directly, like column widths.
+                     s.with(_vm.columns.Select( c => c.create())),
+                     this.observe_title()
+                  )
+               );
+               // TODO: bind to main window's Title
+               var dialog = new SimpleGridSettingsDialog { Title = $"{_window_type} Grid Settings", DataContext = vm };
+               vm.RequestClose += (s, e) => WindowUtilities.force_close(dialog);
+               return dialog;
+            }))
+         };
+         _subscriptions = Disposable.Create(() =>
+           _state_changed?.Invoke(
+                 _state = new StartupData(_state.orders,
+                    _vm.rows_view.get_sorting_criteria(_vm.columns),
+                    _vm.get_filters(),
+                    _vm.grid_settings_manager.create()
+                 )
+           )
+         );
      }

-      public override void Dispose() => Disposable.dispose(ref _vm);
+      public override void Dispose() {
+         Disposable.dispose(ref _vm);
+         Commands.OfType<IDisposable>().DisposeAll();
+      }
   }
 }
@@ -1,49 +1,118 @@
 using bts.api;
 using bts.api.orderman;
+using mbts.persist;
 using mbts.spark;
 using mbts.spark.filters;
 using mbts.ui;
+using mbts.ui.settings;
 using ProtoBuf;
 using System;
 using System.Collections.Generic;
+using System.Linq;
 using System.Reactive.Linq;
 using System.Threading.Tasks;
+using static mbts.ui.controls.DIYGrid;
+using static mbts.ui.spark.FillsView;

 namespace bts.shell {
   class FillsWindowFactory : ShellWindowFactory<FillsWindowFactory.StartupData> {
      readonly IBus _bus;
      readonly OrdersModel _orders_model;
+      readonly UserSettingsHub _settings_hub;

-      public FillsWindowFactory(TradingShellModule module, IBus bus, OrdersModel orders_model)
+      public FillsWindowFactory(TradingShellModule module, IBus bus, UserSettingsHub settings_hub, OrdersModel orders_model)
         : base(module, "Fills") {
         _bus = bus;
         _orders_model = orders_model;
+         _settings_hub = settings_hub;
         _dispose = bus.subscribe(SparkTags.ShowFillsTag).OnDispatcher().Subscribe(show);
      }

+      public static string col_id(Columns col) => col.ToString();
+
      public override Task<IShellWindow> load(StartupData state) =>
-        Task.FromResult<IShellWindow>(new FillsWindow(this, _bus, _orders_model, state));
+        Task.FromResult(_create(state));

      public async void show(StartupData state) =>
         _bus.post(SparkTags.ShowWindow, await load(state));

+      IShellWindow _create(StartupData state) {
+         var settings_manager = new WindowSettingsManager<GridSettings>(_settings_hub,
+            state.grid,
+            get: us => us.fills_grid,
+            set: (us, gs) => us.with(provided_fills_gridsettings: gs));
+         return new FillsWindow(this, _bus, _orders_model, state, settings_manager);
+      }
+
      [ProtoContract]
      public class StartupData {
         public const int Version = 1;
-         public StartupData() { }
-         public StartupData(uint[] orders) : this(orders, null, null) { }
-         public StartupData(FilterStates filters) : this(null, null, filters) { }
-         public StartupData(uint[] orders, List<SortingCriteria> sorting_criteria, FilterStates filters) {
-            this.orders = orders;
-            this.sorting_criteria = sorting_criteria;
-            this.filters = filters;
-         }
+
         [ProtoMember(1)]
         public uint[] orders;
         [ProtoMember(2)]
-         public List<SortingCriteria> sorting_criteria;
+         List<SortingCriteria> _sorting_criteria;
         [ProtoMember(3)]
         public FilterStates filters;
+         [ProtoMember(4)]
+         public GridSettings grid;
+
+         public StartupData() { }
+         public StartupData(uint[] orders) : this(orders, null, null) { }
+         public StartupData(FilterStates filters) : this(null, null, filters) { }
+         public StartupData(uint[] orders, List<SortingCriteria> sorting_criteria, FilterStates filters, GridSettings grid = default) {
+            this.orders = orders;
+            this._sorting_criteria = sorting_criteria;
+            this.filters = filters;
+            this.grid = grid;
+         }
+
+         public static GridSettings DefaultGridSettings => GridSettings.Default.with(DefaultColumns.all, DefaultColumns.default_sorting_criterion);
+         public IReadOnlyList<SortingCriteria> sorting_criterion => _sorting_criteria ?? (_sorting_criteria = DefaultColumns.default_sorting_criterion.ToList());
+         public static StartupData Default() =>
+            new StartupData(null, null, new FilterStates(), null);
+
+         static class DefaultColumns {
+            public static GridColumnSettings security => new GridColumnSettings(col_id(Columns.Security), DefaultColumnHeaders.Security, width: DefaultColumnWidths.Security);
+            public static GridColumnSettings fill_time => new GridColumnSettings(col_id(Columns.FillTime), DefaultColumnHeaders.FillTime, width: DefaultColumnWidths.Time);
+            public static GridColumnSettings user => new GridColumnSettings(col_id(Columns.User), DefaultColumnHeaders.User, width: DefaultColumnWidths.User);
+            public static GridColumnSettings account => new GridColumnSettings(col_id(Columns.Account), DefaultColumnHeaders.Account, width: DefaultColumnWidths.Account);
+            public static GridColumnSettings exchange => new GridColumnSettings(col_id(Columns.Exchange), DefaultColumnHeaders.Exchange, width: DefaultColumnWidths.Exchange);
+            public static GridColumnSettings time_in_force => new GridColumnSettings(col_id(Columns.TimeInForce), DefaultColumnHeaders.TimeInForce, width: DefaultColumnWidths.TimeInForce);
+            public static GridColumnSettings order_type => new GridColumnSettings(col_id(Columns.OrderType), DefaultColumnHeaders.OrderType, width: DefaultColumnWidths.OrderType);
+            public static GridColumnSettings side => new GridColumnSettings(col_id(Columns.Side), DefaultColumnHeaders.Side, width: DefaultColumnWidths.Side);
+            public static GridColumnSettings quantity => new GridColumnSettings(col_id(Columns.Size), DefaultColumnHeaders.Side, width: DefaultColumnWidths.Size, horizontal_alignment: System.Windows.HorizontalAlignment.Right);
+            public static GridColumnSettings price => new GridColumnSettings(col_id(Columns.Price), DefaultColumnHeaders.Price, width: DefaultColumnWidths.Price, horizontal_alignment: System.Windows.HorizontalAlignment.Right);
+            public static GridColumnSettings fill_kind => new GridColumnSettings(col_id(Columns.FillKind), DefaultColumnHeaders.FillKind, width: DefaultColumnWidths.FillKind);
+            public static GridColumnSettings fill_key => new GridColumnSettings(col_id(Columns.FillKey), DefaultColumnHeaders.FillKey, width: DefaultColumnWidths.FillKey);
+            public static GridColumnSettings order_key => new GridColumnSettings(col_id(Columns.OrderKey), DefaultColumnHeaders.OrderKey, width: DefaultColumnWidths.OrderKey);
+            public static GridColumnSettings security_key => new GridColumnSettings(col_id(Columns.SecurityKey), DefaultColumnHeaders.SecurityKey, width: DefaultColumnWidths.SecurityKey);
+            public static IEnumerable<SortingCriteria> default_sorting_criterion {
+               get {
+                  yield return new SortingCriteria(fill_time.id, false);
+               }
+            }
+
+            public static IEnumerable<GridColumnSettings> all {
+               get {
+                  yield return security;
+                  yield return fill_time;
+                  yield return user;
+                  yield return account;
+                  yield return exchange;
+                  yield return time_in_force;
+                  yield return order_type;
+                  yield return side;
+                  yield return quantity;
+                  yield return price;
+                  yield return fill_kind;
+                  yield return fill_key;
+                  yield return order_key;
+                  yield return security_key;
+               }
+            }
+         }
+
      }

      [ProtoContract]
@@ -4,6 +4,7 @@ using mbts.config;
 using mbts.persist;
 using mbts.spark;
 using mbts.ui;
+using mbts.ui.spark;
 using ProtoBuf;
 using System;
 using System.Collections.Generic;
@@ -22,15 +23,17 @@ namespace bts.shell {
      readonly IWindowManager _wm;
      readonly UserSettingsHub _settings_hub;
      readonly OrdersModel _orders_model;
+      readonly MarketDataAuxiliaryModel _md_auxiliary_model;
      readonly int _max_ladders_open;
      IReadOnlyDictionary<uint, SecurityMD> _securities = new Dictionary<uint, SecurityMD>();

-      public LadderWindowFactory(IShellModule owner, IBus bus, IWindowManager wm, UserSettingsHub settings_hub, OrdersModel orders_model)
+      public LadderWindowFactory(IShellModule owner, IBus bus, IWindowManager wm, UserSettingsHub settings_hub, OrdersModel orders_model, MarketDataAuxiliaryModel md_auxiliary_model)
         : base(owner, "SparkLadder") {
         _bus = bus;
         _wm = wm;
         _settings_hub = settings_hub;
         _orders_model = orders_model;
+         _md_auxiliary_model = md_auxiliary_model;
         var knobs = Configuration.get<bts.config.LadderKnobs>();
         _max_ladders_open = (int)(knobs.max_open_ladders);
         _security_timeout = TimeSpan.FromSeconds(Math.Max(15, knobs.security_timeout_secs));
@@ -56,7 +59,7 @@ namespace bts.shell {
      IShellWindow create_ladder_window(SecurityMD md, LadderSettings state_settings) {
         var id = Interlocked.Increment(ref _ladder_count) % Environment.ProcessorCount;
         var view = new Lazy<UIElement>(() => {
-            var model = new LadderModel(md, _orders_model);
+            var model = new LadderModel(md, _orders_model, _md_auxiliary_model);
            var settings_manager = new WindowSettingsManager<LadderSettings>(
               _settings_hub, state_settings,
               us => sanitize_ladder_settings(us.ladder),
@@ -85,6 +88,12 @@ namespace bts.shell {
               s.session_high_line = LadderSettings.Default.session_high_line;
            if (s.session_range_fill == null)
               s.session_range_fill = LadderSettings.Default.session_range_fill;
+            if (s.volume_column == null)
+               s.volume_column = LadderSettings.Default.volume_column;
+            if (s.size_display == null)
+               s.size_display = MarketSizeDisplay.get_default();
+            if (s.size_display.normal == null)
+               s.size_display = s.size_display.with(MarketSizeDisplay.get_default().normal);
            s.row_height = LadderRender.measure_row_height(s);
            return s;
         }
@@ -3,6 +3,7 @@ using bts.api.orderman;
 using bts.utils;
 using mbts.spark.filters;
 using mbts.ui;
+using mbts.ui.controls;
 using mbts.ui.converters;
 using mbts.ui.utility;
 using mbts.ui.utility.text;
@@ -208,7 +209,7 @@ namespace mbts.spark {
               "Parent Key",
               nameof(OrderBookRowVM.parent_order_key),
               r => r.parent_order_key.store,
-               80,
+               DefaultColumnWidths.ParentKey,
               new RegexFilterVM<OrderBookRowVM>(
                  r => r.parent_order_key.text,
                  value_path(nameof(OrderBookRowVM.parent_order_key))),
@@ -321,6 +322,7 @@ namespace mbts.spark {
         ListSortDirection? _cached_sort_direction;
         readonly string _filter_template;
         protected readonly Func<OrderBookRowVM, IOrderBookCellStore> _get_cell_store;
+         GlyphContext _root_glyph_context, _child_glyph_context;

         protected OrderbookColumnBase(Columns col_key, string header, Func<OrderBookRowVM, IOrderBookCellStore> get_cell_store, string sort_prop, double width, IDataGridColumnPersistentFilter<OrderBookRowVM, T> filter, string filter_template) : base(col_key) {
            id = key.ToString();
@@ -331,6 +333,12 @@ namespace mbts.spark {
            this.filter = filter;
            _filter_template = filter_template;
            _cached_sort_direction = SortDirection;
+            font_params_changed += refresh_glyph_contexts;
+            refresh_glyph_contexts();
+            void refresh_glyph_contexts() {
+               _root_glyph_context = GlyphContext.create(font_family, RenderUtils.root_font_weight);
+               _child_glyph_context = GlyphContext.create(font_family, RenderUtils.child_font_weight);
+            }
         }

         public IDataGridColumnPersistentFilter<OrderBookRowVM, T> filter { get; }
@@ -346,6 +354,7 @@ namespace mbts.spark {
            _cached_sort_direction = new_value;
            base.OnSortDirectionChanged(new_value);
         }
+         protected GlyphContext _get_glyph_context(OrderBookRowVM row) => row.is_child ? _child_glyph_context : _root_glyph_context;
      }

      public class SimpleTextColumn<TFilterState> : OrderbookColumnBase<TFilterState>, IRenderColumn<OrderBookRowVM> {
@@ -355,7 +364,7 @@ namespace mbts.spark {
         public void draw(OrderBookRowVM row, DrawingContext dc, ColumnGeometry position, double row_height) {
            var cell = _get_cell_store(row);
            if (!string.IsNullOrEmpty(cell.current.text))
-               CellRender.draw_text(dc, RenderUtils.get_glyph_context(row), font_size, cell.current.text, position, RowHeight,
+               CellRender.draw_text(dc, _get_glyph_context(row), font_size, cell.current.text, position, RowHeight,
                  font_brush, null, horizontal_alignment, VerticalAlignment.Center, DefaultCellPadding, cell.animations);
         }
      }
@@ -366,7 +375,7 @@ namespace mbts.spark {
            : base(Columns.Side, "B/S", r => r.side.store, nameof(OrderBookRowVM.side), DefaultColumnWidths.Side, filter, DataGridFilterKnownTemplates.EnumValues) { }

         public void draw(OrderBookRowVM row, DrawingContext dc, ColumnGeometry position, double row_height) =>
-            CellRender.draw_text(dc, RenderUtils.get_glyph_context(row), font_size, row.side.text, position, RowHeight,
+            CellRender.draw_text(dc, _get_glyph_context(row), font_size, row.side.text, position, RowHeight,
               RenderUtils.get_side_brush(row), null, horizontal_alignment, VerticalAlignment.Center, DefaultCellPadding, row.side.store.animations);
      }

@@ -377,18 +386,18 @@ namespace mbts.spark {
         }

         public void draw(OrderBookRowVM row, DrawingContext dc, ColumnGeometry position, double row_height) =>
-            CellRender.draw_text(dc, RenderUtils.get_glyph_context(row), font_size, row.quantity.text, position, RowHeight,
+            CellRender.draw_text(dc, _get_glyph_context(row), font_size, row.quantity.text, position, RowHeight,
               RenderUtils.get_side_brush(row), null, horizontal_alignment, VerticalAlignment.Center, DefaultCellPadding, row.quantity.store.animations);
      }

      public class FilledColumn : OrderbookColumnBase<UIntMinMaxState>, IRenderColumn<OrderBookRowVM> {
         public FilledColumn(IDataGridColumnPersistentFilter<OrderBookRowVM, UIntMinMaxState> filter)
-            : base(Columns.Filled, "Filled Qty", r => r.filled_quantity.store, nameof(OrderBookRowVM.filled_quantity), DefaultColumnWidths.Size, filter, DataGridFilterKnownTemplates.UIntMinMax) {
+            : base(Columns.Filled, "Filled Qty", r => r.filled_quantity.store, nameof(OrderBookRowVM.filled_quantity), DefaultColumnWidths.Filled, filter, DataGridFilterKnownTemplates.UIntMinMax) {
            sort_member_path = nameof(OrderBookRowVM.filled_quantity);
         }

         public void draw(OrderBookRowVM row, DrawingContext dc, ColumnGeometry position, double row_height) =>
-            CellRender.draw_text(dc, RenderUtils.get_glyph_context(row), font_size, row.filled_quantity.text, position, RowHeight,
+            CellRender.draw_text(dc, _get_glyph_context(row), font_size, row.filled_quantity.text, position, RowHeight,
               RenderUtils.get_side_brush(row), null, horizontal_alignment, VerticalAlignment.Center, DefaultCellPadding, row.filled_quantity.store.animations);
      }

@@ -397,26 +406,26 @@ namespace mbts.spark {
            : base(Columns.Price, "Price", r => r.price.store, nameof(OrderBookRowVM.price), DefaultColumnWidths.Price, filter, DataGridFilterKnownTemplates.DoubleMinMax) { }

         public void draw(OrderBookRowVM row, DrawingContext dc, ColumnGeometry position, double row_height) =>
-            CellRender.draw_text(dc, RenderUtils.get_glyph_context(row), font_size, row.price.text,
+            CellRender.draw_text(dc, _get_glyph_context(row), font_size, row.price.text,
               position, RowHeight, font_brush, null, horizontal_alignment, VerticalAlignment.Center, DefaultCellPadding, row.price.store.animations);
      }

      public class AvgFilledColumn : OrderbookColumnBase<DoubleMinMaxState>, IRenderColumn<OrderBookRowVM> {
         public AvgFilledColumn(IDataGridColumnPersistentFilter<OrderBookRowVM, DoubleMinMaxState> filter)
-            : base(Columns.AvgFilled, "Avg Filled", r => r.avg_price.store, nameof(OrderBookRowVM.avg_price), DefaultColumnWidths.Price, filter, DataGridFilterKnownTemplates.DoubleMinMax) { }
+            : base(Columns.AvgFilled, "Avg Filled", r => r.avg_price.store, nameof(OrderBookRowVM.avg_price), DefaultColumnWidths.AveragePrice, filter, DataGridFilterKnownTemplates.DoubleMinMax) { }

         public void draw(OrderBookRowVM row, DrawingContext dc, ColumnGeometry position, double row_height) {
-            CellRender.draw_text(dc, RenderUtils.get_glyph_context(row), font_size, row.avg_price.text,
+            CellRender.draw_text(dc, _get_glyph_context(row), font_size, row.avg_price.text,
               position, RowHeight, font_brush, null, horizontal_alignment, VerticalAlignment.Center, DefaultCellPadding, row.avg_price.store.animations);
         }
      }

      public class LastFilledColumn : OrderbookColumnBase<DoubleMinMaxState>, IRenderColumn<OrderBookRowVM> {
         public LastFilledColumn(IDataGridColumnPersistentFilter<OrderBookRowVM, DoubleMinMaxState> filter)
-            : base(Columns.LastPrice, "Last Filled", r => r.last_price.store, nameof(OrderBookRowVM.last_price), DefaultColumnWidths.Price, filter, DataGridFilterKnownTemplates.DoubleMinMax) { }
+            : base(Columns.LastPrice, "Last Filled", r => r.last_price.store, nameof(OrderBookRowVM.last_price), DefaultColumnWidths.LastPrice, filter, DataGridFilterKnownTemplates.DoubleMinMax) { }

         public void draw(OrderBookRowVM row, DrawingContext dc, ColumnGeometry position, double row_height) =>
-            CellRender.draw_text(dc, RenderUtils.get_glyph_context(row), font_size, row.last_price.text,
+            CellRender.draw_text(dc, _get_glyph_context(row), font_size, row.last_price.text,
               position, RowHeight, font_brush, null, horizontal_alignment, VerticalAlignment.Center, DefaultCellPadding, row.last_price.store.animations);
      }

@@ -425,7 +434,7 @@ namespace mbts.spark {
            : base(Columns.Time, "Time", r => r.time_created.store, nameof(OrderBookRowVM.time_created), DefaultColumnWidths.Time, filter, DataGridFilterKnownTemplates.TimeFilter) { }

         public void draw(OrderBookRowVM row, DrawingContext dc, ColumnGeometry position, double row_height) =>
-            CellRender.draw_text(dc, RenderUtils.get_glyph_context(row), font_size, row.time_created.text,
+            CellRender.draw_text(dc, _get_glyph_context(row), font_size, row.time_created.text,
               position, RowHeight, font_brush, null, horizontal_alignment, VerticalAlignment.Center, DefaultCellPadding, row.time_created.store.animations);
      }

@@ -434,7 +443,7 @@ namespace mbts.spark {
            : base(Columns.LastChange, "Last Change", r => r.last_change.store, nameof(OrderBookRowVM.last_change), DefaultColumnWidths.Time, filter, DataGridFilterKnownTemplates.TimeFilter) { }

         public void draw(OrderBookRowVM row, DrawingContext dc, ColumnGeometry position, double row_height) =>
-            CellRender.draw_text(dc, RenderUtils.get_glyph_context(row), font_size, row.last_change.text,
+            CellRender.draw_text(dc, _get_glyph_context(row), font_size, row.last_change.text,
               position, RowHeight, font_brush, null, horizontal_alignment, VerticalAlignment.Center, DefaultCellPadding, row.last_change.store.animations);
      }

@@ -470,7 +479,7 @@ namespace mbts.spark {
            id = key.ToString();
            this.filter = filter;
            Header = "Last Message";
-            Width = 80;
+            Width = DIYGrid.DefaultColumnWidths.LastMessage;
            sort_member_path = nameof(OrderBookRowVM.last_msg);
            tooltip_binding = new Binding(nameof(OrderBookRowVM.last_msg));
         }
@@ -521,7 +530,9 @@ namespace mbts.spark {
            toggle_button.SetBinding(ToggleButton.VisibilityProperty, new Binding(nameof(OrderBookRowVM.is_parent)) { Converter = _expander_visiblilty_converter });
            toggle_button.SetResourceReference(ToggleButton.StyleProperty, ExpandCollapseToggleStyleKey);
            //
-            var security_view = new TextBlock { FontFamily = font_family, FontSize = font_size, Foreground = font_brush };
+            var security_view = new TextBlock { Foreground = font_brush };
+            security_view.SetBinding(TextBlock.FontFamilyProperty, new Binding(nameof(font_family)) { Source = this });
+            security_view.SetBinding(TextBlock.FontSizeProperty, new Binding(nameof(font_size)) { Source = this });
            security_view.SetBinding(TextBlock.TextProperty, $"{nameof(OrderBookRowVM.security)}.{nameof(IGridCell.text)}");
            security_view.SetBinding(TextBlock.HorizontalAlignmentProperty, new Binding(nameof(horizontal_alignment)) { Source = this });
            security_view.SetBinding(TextBlock.ForegroundProperty, new Binding(nameof(font_brush)) { Source = this });
@@ -548,7 +559,10 @@ namespace mbts.spark {
      #endregion

      static class RenderUtils {
-         public static readonly GlyphContext _child_glyph_context = TextUtils.StandardGlyphContext.with(FontWeights.Light);
+         public static FontWeight
+            root_font_weight = FontWeights.Normal,
+            child_font_weight = FontWeights.Light;
+
         public static double font_size = FontSizes.Small;

         public static readonly IValueConverter
@@ -567,7 +581,6 @@ namespace mbts.spark {
            return mb;
         }

-         public static GlyphContext get_glyph_context(OrderBookRowVM r) => r.is_child ? _child_glyph_context : TextUtils.StandardGlyphContext;
         public static Brush get_side_brush(OrderBookRowVM r) => r.side.value == Side.Buy ? BTSColors.MarketData.bid : BTSColors.MarketData.ask;
         public static BindingBase get_font_weight_binding() => new Binding(nameof(OrderBookRowVM.is_child)) { Converter = _font_weight_converter };
      }
@@ -4,6 +4,7 @@ using bts.api.core;
 using bts.api.orderman;
 using bts.shell;
 using mbts.collections;
+using mbts.persist;
 using mbts.ui;
 using mbts.ui.controls;
 using mbts.ui.settings;
@@ -23,12 +24,17 @@ using System.Windows.Data;
 using System.Windows.Input;
 using static bts.shell.OrderBookWindowFactory;
 using static mbts.spark.OrderBookView;
+using _GridSettingsManager = mbts.ui.GridSettingsManager<mbts.spark.OrderBookRowVM, mbts.spark.OrderRecordTuple, bts.shell.INotificationServiceDataCache, mbts.OrderRecordTuplePredicate, bts.shell.OrderBookWindowFactory.OrderBookGridSettings>;

 namespace mbts.spark {
   partial class OrderBookVM : DisposableViewModelBase, IHandleRowSelection {
      readonly LiveSortingColumKeys _live_sorting_columns;
      readonly Property<OrderBookRowVM> _current_row;
+      readonly Subject<(IEnumerable<SecurityImmutable> added, IEnumerable<SecurityImmutable> removed)> _order_securities_subject =
+         new Subject<(IEnumerable<SecurityImmutable> added, IEnumerable<SecurityImmutable> removed)>();
+      readonly IWindowSettingsManager<OrderBookGridSettings> _settings_manager;
      OrderBookStartupData _state;
+
      Dictionary<uint, OrderBookRowVM> _order_rows_cache = new Dictionary<uint, OrderBookRowVM>();
      Dictionary<uint, BranchFilterSource> _branch_filter_roots = new Dictionary<uint, BranchFilterSource>();
      ObservableCollection<OrderBookRowVM> _order_rows = new ObservableCollection<OrderBookRowVM>();
@@ -36,7 +42,8 @@ namespace mbts.spark {
      SetMap<uint, uint> _parent_to_children = new SetMap<uint, uint>();
      SetMap<uint, uint> _security_orders = new SetMap<uint, uint>();

-      public OrderBookVM(IObservable<string> owner_title, IBus bus, INotificationService notification_service, OrdersModel model) {
+      public OrderBookVM(IObservable<string> owner_title, IBus bus, INotificationService notification_service, OrdersModel model, IWindowSettingsManager<OrderBookGridSettings> settings_manager) {
+         _settings_manager = settings_manager;
         var order_securities_subject = new Subject<(IEnumerable<SecurityImmutable> added, IEnumerable<SecurityImmutable> removed)>();
         columns = new OrderBookColumnCollection(bus, model, order_securities_subject);
         rows_view = CollectionViewSource.GetDefaultView(_order_rows);
@@ -63,6 +70,7 @@ namespace mbts.spark {
            });

         grid_settings_manager = _create_grid_settings_manager(owner_title, bus, notification_service, model, _order_rows, rows_view, columns);
+         grid_settings_manager.load_from(OrderBookStartupData.DefaultGrid);
         _live_sorting_columns = new LiveSortingColumKeys(grid_settings_manager.live_sorting_props);

         SetMap<uint, uint> missing_security_orders = new SetMap<uint, uint>();
@@ -71,6 +79,7 @@ namespace mbts.spark {
         _dispose = Disposable.Create(
            bus.subscribe(SparkTags.SecuritiesTag).OnDispatcher().Subscribe(on_securities),
            model.on_orders.OnDispatcher().Subscribe(on_orders),
+            settings_manager.subscribe_current().OnDispatcher().Subscribe(grid_settings_manager),
            grid_settings_manager,
            columns,
            order_securities_subject);
@@ -215,7 +224,7 @@ namespace mbts.spark {
      public OrderRecordImmutable? current_order => current_row?.order;
      public IEnumerable<OrderRecordImmutable> selected_orders => _selected_rows.Select(r => r.order);

-      public GridSettingsManager<OrderBookRowVM, OrderRecordTuple, INotificationServiceDataCache, OrderRecordTuplePredicate> grid_settings_manager { get; }
+      public _GridSettingsManager grid_settings_manager { get; }
      public ICommand collapse_all_rows_command { get; }
      public ICommand expand_all_rows_command { get; }

@@ -225,14 +234,17 @@ namespace mbts.spark {
      }

      public OrderBookStartupData create() {
-         var (grid, animations) = grid_settings_manager.create();
-         return new OrderBookStartupData(columns.create(), grid, animations.Select(a => new OrderRecordTuplePredicateAnimations(a.predicate_builder, a.cell_animations, a.row_animations, a.sound_notifications)));
+         if (_settings_manager.instance_settings == null)
+            return new OrderBookStartupData(columns.create(), use_defaults: true);
+         var gs = grid_settings_manager.create();
+         return new OrderBookStartupData(columns.create(), gs.general, gs.predicate_animations, use_defaults: false);
      }

      public void load_from(OrderBookStartupData state) {
         if (state == null) return;
         _state = state;
-         grid_settings_manager.load_from((state.grid, state.predicate_animations));
+         var gs = state.grid_settings_wrapper();
+         if (gs != null) grid_settings_manager.load_from(gs);
         columns.load_from(state.filters);
      }
    
@@ -242,7 +254,7 @@ namespace mbts.spark {
      protected override void Dispose(bool disposing) =>
         Disposable.dispose(_order_rows);

-      static GridSettingsManager<OrderBookRowVM, OrderRecordTuple, INotificationServiceDataCache, OrderRecordTuplePredicate> _create_grid_settings_manager(
+      static _GridSettingsManager _create_grid_settings_manager(
         IObservable<string> owner_title, IBus bus, INotificationService notification_service, OrdersModel model,
         ObservableCollection<OrderBookRowVM> rows, ICollectionView rows_view, ObservableCollection<DIYGrid.ColumnBase> columns) {
         // make font-weight immutable for all columns (the font-weight rule is hard-coded: Regular for root-orders, Light for all others)
@@ -254,7 +266,7 @@ namespace mbts.spark {
         foreach (var c in new[] { Columns.Side, Columns.Size, Columns.Filled }) {
            col_settings_flags[c.ToString()] = GridColumnSettingsFeatureFlags.ImmutableFontColor | GridColumnSettingsFeatureFlags.ImmutableFontWeight;
         }
-         return new GridSettingsManager<OrderBookRowVM, OrderRecordTuple, INotificationServiceDataCache, OrderRecordTuplePredicate>(
+         return new _GridSettingsManager(
            owner_title, bus, notification_service, model, rows, rows_view, columns,
            () => {
               var pvm = PredicateBuilderVMWrapper.create<OrderRecordTuple, OrderRecordTuplePredicate, OrderRecordTuplePredicate.PredicateTypeOneofCase>(
@@ -267,7 +279,9 @@ namespace mbts.spark {
                  OrderRecordTuplePredicateVMFactory.get_oneofs(bus, model), rp => rp.predicate_type_case);
               pvm.selected_predicate_type = _corresponding_predicate_type(EnumHelper.parse_or_default<Columns>(col_id));
               return pvm;
-            }, notification_service.data_cache, col_settings_flags);
+            },
+            (gen, anims) => new OrderBookGridSettings(gen, anims.Select(a => new OrderRecordTuplePredicateAnimations(a.predicate_builder, a.cell_animations, a.row_animations, a.sound_notifications))),
+            notification_service.data_cache, col_settings_flags);
      }

      static OrderRecordTuplePredicate.PredicateTypeOneofCase _corresponding_predicate_type(Columns col) {
@@ -2,18 +2,27 @@
 using bts.api.orderman;
 using bts.shell;
 using bts.spark;
+using mbts.persist;
 using mbts.ui;
+using mbts.ui.converters;
+using mbts.ui.spark;
+using mbts.ui.utility;
 using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Reactive.Linq;
 using System.Windows;
+using System.Windows.Data;
 using System.Windows.Media;
+//using IOrderBookWSM = mbts.persist.IWindowSettingsManager<mbts.spark.GridSettingsWithNotifications<mbts.spark.OrderRecordTuple, mbts.OrderRecordTuplePredicate>>;
+using OrderBookGridSettings = bts.shell.OrderBookWindowFactory.OrderBookGridSettings;
+using OrderBookGridSettingsVM = mbts.spark.GridSettingsVM<mbts.spark.OrderRecordTuple, mbts.OrderRecordTuplePredicate, bts.shell.OrderBookWindowFactory.OrderBookGridSettings>;

 namespace mbts.spark {
   internal class OrderBookWindow : SparkWindow<OrderBookWindowFactory.OrderBookStartupData>, ISharedWindow {
-      const string _window_type = "OrderBook", ORDERBOOK_THREAD_ID = "OrderBook";
+      const string _window_type = "OrderBook", ORDERBOOK_THREAD_ID = "OrderBook", _default_title = "Order Book";
      readonly INotificationService _notification_service;
+      readonly IWindowSettingsManager<OrderBookGridSettings> _settings_manager;
      OrderBookWindowFactory.OrderBookStartupData _state;
      OrdersModel _model;
      OrderBookVM _vm;
@@ -32,12 +41,14 @@ namespace mbts.spark {
         , _toggle_expand_all_command
         , _show_grid_settings_command;

-      public OrderBookWindow(OrdersModel model, OrderBookWindowFactory factory, IBus bus, INotificationService notification_service, OrderBookWindowFactory.OrderBookStartupData state, ImageSource icon)
-         : base("Order Book", bus, factory, SparkCommands.ShowOrders.icon) {
+      public OrderBookWindow(OrdersModel model, OrderBookWindowFactory factory, IBus bus, INotificationService notification_service,
+         OrderBookWindowFactory.OrderBookStartupData state, ImageSource icon, IWindowSettingsManager<OrderBookGridSettings> settings_manager)
+         : base(_default_title, bus, factory, SparkCommands.ShowOrders.icon) {
         _model = model;
         _factory = factory;
         _notification_service = notification_service;
         _state = state;
+         _settings_manager = settings_manager;
      }

      public override OrderBookWindowFactory.OrderBookStartupData SaveState => _state = _vm.create();
@@ -45,8 +56,11 @@ namespace mbts.spark {
      public override string window_type => _window_type;
      public override UIElement Content => _view;
      public override IEnumerable<SparkCommand> Commands => _commands;
-      public override double MinWidth => 1577;
-
+      public override double MinWidth =>
+         OrderBookWindowFactory.OrderBookStartupData.DefaultGrid.general.columns.Sum(gcs => gcs.width)
+         + SPARK_MENU_COLLAPSED_WIDTH
+         + LAUNCHER_BUTTON_BORDER_WIDTH
+         + EXTRA_FOR_NO_HORIZONTAL_SCROLLBAR_WIDTH;
      public string thread_id => ORDERBOOK_THREAD_ID;

      public override void Dispose() {
@@ -55,7 +69,7 @@ namespace mbts.spark {
      }

      public void thread_init() {
-         _vm = new OrderBookVM(this.observe_title(), _bus, _notification_service, _model);
+         _vm = new OrderBookVM(this.observe_title(), _bus, _notification_service, _model, _settings_manager);
         _vm.load_from(_state);
         _view = new OrderBookView(_vm);

@@ -106,9 +120,32 @@ namespace mbts.spark {
            Icons.DownArrow,
            _vm.expand_all_rows_command);

-            _show_grid_settings_command = SparkCommands.window_settings_command(_vm.grid_settings_manager.launch_settings_editor);
+         _show_grid_settings_command = SparkCommands.window_settings_command(new DialogCommand(() => {
+            var vm = new WindowSettingsDialogVM<OrderBookGridSettings, OrderBookGridSettingsVM>(
+               _settings_manager,
+               us => us.order_book_grid,
+               UserSettings.FileExtensions.GRID,
+               s => {
+                  if (s.general is null)
+                     s = OrderBookWindowFactory.OrderBookStartupData.DefaultGrid;
+                  return _vm.grid_settings_manager.create_vm(
+                     // we need to get the most up to date GridSettings when launching b/c users may
+                     // have changed some settings on the grid directly, like column widths.
+                     s.general.with(_vm.columns.Select(c => c.create())),
+                     this.observe_title()
+                  );
+               }
+            );
+            // TODO: bind to main window's Title
+            var dialog = new SimpleGridSettingsDialog { DataContext = vm };
+            dialog.SetBinding(Window.TitleProperty, new Binding($"{nameof(vm.instance_vm)}.{nameof(OrderBookGridSettingsVM.owner_title)}") {
+               Converter = ValueConverter.create<string, string>(str => (string.IsNullOrEmpty(str) ? _default_title : str) + " Settings")
+            });
+            vm.RequestClose += (s, e) => WindowUtilities.force_close(dialog);
+            return dialog;
+         }));

-         _commands = new SparkCommand[] {
+      _commands = new SparkCommand[] {
            _show_fills_command,
            _modify_order_command,
            _cancel_selected_orders_command,
@@ -1,8 +1,9 @@
 using bts.api;
 using bts.api.orderman;
 using bts.spark;
-using Google.Protobuf.Collections;
+using bts.utils;
 using mbts;
+using mbts.persist;
 using mbts.spark;
 using mbts.spark.filters;
 using mbts.ui;
@@ -11,6 +12,7 @@ using mbts.ui.settings;
 using ProtoBuf;
 using System;
 using System.Collections.Generic;
+using System.ComponentModel;
 using System.Reactive.Linq;
 using System.Threading.Tasks;
 using System.Windows;
@@ -22,19 +24,22 @@ namespace bts.shell {
      readonly INotificationService _notification_service;
      readonly INotificationServiceDataCache _notification_service_data_cache;
      readonly OrdersModel _model;
+      readonly UserSettingsHub _settings_hub;

-      public OrderBookWindowFactory(IShellModule owner, IBus bus, INotificationService notification_service, INotificationServiceDataCache notification_service_data_cache, OrdersModel model) : base(owner, "SparkOrderBookWindow") {
+      public OrderBookWindowFactory(IShellModule owner, IBus bus, INotificationService notification_service, INotificationServiceDataCache notification_service_data_cache, OrdersModel model, UserSettingsHub settings_hub) : base(owner, "SparkOrderBookWindow") {
         _bus = bus;
         _notification_service = notification_service;
         _notification_service_data_cache = notification_service_data_cache;
         _model = model;
-
+         _settings_hub = settings_hub;
         _dispose = bus.subscribe(SparkTags.ShowOrderBookTag).OnDispatcher().Subscribe(show);
      }

      public override Task<IShellWindow> load(OrderBookStartupData state) {
-         var w = new OrderBookWindow(_model, this, _bus, _notification_service, state, SparkCommands.ShowOrders.icon) as IShellWindow;
-         return Task.FromResult(w);
+         var settings_manager = new WindowSettingsManager<OrderBookGridSettings>(_settings_hub, state.grid_settings_wrapper(),
+            us => us.order_book_grid, (us, s) => us.with(order_book_grid: s));
+         var w = new OrderBookWindow(_model, this, _bus, _notification_service, state, SparkCommands.ShowOrders.icon, settings_manager.as_non_shared());
+         return Task.FromResult<IShellWindow>(w);
      }

      async void show(OrderBookStartupData startup_data) {
@@ -49,27 +54,42 @@ namespace bts.shell {
         [ProtoMember(10)]
         public FilterStates filters;
         [ProtoMember(15)]
+         [Obsolete]
         public GridSettings grid;
         [ProtoMember(20)]
+         [Obsolete]
         List<OrderRecordTuplePredicateAnimations> _predicate_animations;
+         [ProtoMember(25)]
+         public bool use_defaults;

         public OrderBookStartupData() { }

-         public OrderBookStartupData(FilterStates filters, GridSettings grid = default, IEnumerable<OrderRecordTuplePredicateAnimations> predicate_animations = null) {
+         public OrderBookStartupData(FilterStates filters, GridSettings grid = default, IEnumerable<OrderRecordTuplePredicateAnimations> predicate_animations = null, bool use_defaults = false) {
            this.filters = filters;
+            this.use_defaults = use_defaults;
+#pragma warning disable CS0612 // Type or member is obsolete
            this.grid = grid;
            _predicate_animations = new List<OrderRecordTuplePredicateAnimations>();
            if (predicate_animations != null)
               _predicate_animations.AddRange(predicate_animations);
+#pragma warning restore CS0612 // Type or member is obsolete
         }

+#pragma warning disable CS0612 // Type or member is obsolete
+         [Obsolete]
         public IReadOnlyList<OrderRecordTuplePredicateAnimations> predicate_animations => _predicate_animations ?? (_predicate_animations = new List<OrderRecordTuplePredicateAnimations>());
+         public OrderBookGridSettings grid_settings_wrapper() => use_defaults ? null : new OrderBookGridSettings(grid, predicate_animations);
+#pragma warning restore CS0612 // Type or member is obsolete

         public static OrderBookStartupData Default =>
           new OrderBookStartupData(
              new FilterStates {
                 statuses = new[] { OrderStatus.Working }
-              }, GridSettings.Default.with(DefaultColumns.all, DefaultColumns.sorting_criterion));
+              }, _default_general_grid, use_defaults: true);
+
+         public static OrderBookGridSettings DefaultGrid => new OrderBookGridSettings(_default_general_grid);
+
+         static GridSettings _default_general_grid => GridSettings.Default.with(DefaultColumns.all, DefaultColumns.sorting_criterion);

         static class DefaultColumns {
            public static GridColumnSettings security => new GridColumnSettings(Columns.Security.ToString(), DIYGrid.DefaultColumnHeaders.Security, width: DIYGrid.DefaultColumnWidths.Security);
@@ -85,14 +105,14 @@ namespace bts.shell {
            public static GridColumnSettings side => new GridColumnSettings(Columns.Side.ToString(), "B/S", width: DIYGrid.DefaultColumnWidths.Side);
            public static GridColumnSettings quantity => new GridColumnSettings(Columns.Size.ToString(), "Qty", width: DIYGrid.DefaultColumnWidths.Size, horizontal_alignment: HorizontalAlignment.Right);
            public static GridColumnSettings price => new GridColumnSettings(Columns.Price.ToString(), DIYGrid.DefaultColumnHeaders.Price, width: DIYGrid.DefaultColumnWidths.Price, horizontal_alignment: HorizontalAlignment.Right);
-            public static GridColumnSettings filled_quantity => new GridColumnSettings(Columns.Filled.ToString(), "Filled Qty", width: DIYGrid.DefaultColumnWidths.Size, horizontal_alignment: HorizontalAlignment.Right);
-            public static GridColumnSettings avg_price => new GridColumnSettings(Columns.AvgFilled.ToString(), "Avg Filled", width: DIYGrid.DefaultColumnWidths.Price, horizontal_alignment: HorizontalAlignment.Right);
-            public static GridColumnSettings last_price => new GridColumnSettings(Columns.LastPrice.ToString(), "Last Filled", width: DIYGrid.DefaultColumnWidths.Price, horizontal_alignment: HorizontalAlignment.Right);
+            public static GridColumnSettings filled_quantity => new GridColumnSettings(Columns.Filled.ToString(), "Filled Qty", width: DIYGrid.DefaultColumnWidths.Filled, horizontal_alignment: HorizontalAlignment.Right);
+            public static GridColumnSettings avg_price => new GridColumnSettings(Columns.AvgFilled.ToString(), "Avg Filled", width: DIYGrid.DefaultColumnWidths.AveragePrice, horizontal_alignment: HorizontalAlignment.Right);
+            public static GridColumnSettings last_price => new GridColumnSettings(Columns.LastPrice.ToString(), "Last Filled", width: DIYGrid.DefaultColumnWidths.LastPrice, horizontal_alignment: HorizontalAlignment.Right);
            public static GridColumnSettings status => new GridColumnSettings(Columns.Status.ToString(), "Status", width: 80);
-            public static GridColumnSettings last_message => new GridColumnSettings(Columns.LastMessage.ToString(), "Last Message", width: 80);
+            public static GridColumnSettings last_message => new GridColumnSettings(Columns.LastMessage.ToString(), "Last Message", width: DIYGrid.DefaultColumnWidths.LastMessage);
            public static GridColumnSettings security_key => new GridColumnSettings(Columns.SecurityKey.ToString(), DIYGrid.DefaultColumnHeaders.SecurityKey, width: DIYGrid.DefaultColumnWidths.SecurityKey);
            public static GridColumnSettings order_key => new GridColumnSettings(Columns.OrderKey.ToString(), DIYGrid.DefaultColumnHeaders.OrderKey, width: DIYGrid.DefaultColumnWidths.OrderKey);
-            public static GridColumnSettings parent_key => new GridColumnSettings(Columns.ParentKey.ToString(), "Parent Key", width: DIYGrid.DefaultColumnWidths.OrderKey);
+            public static GridColumnSettings parent_key => new GridColumnSettings(Columns.ParentKey.ToString(), "Parent Key", width: DIYGrid.DefaultColumnWidths.ParentKey);

            public static IEnumerable<SortingCriteria> sorting_criterion {
               get {
@@ -171,5 +191,38 @@ namespace bts.shell {
         [ProtoMember(20)]
         public string[] symbols;
      }
+
+      [ProtoContract]
+      public class OrderBookGridSettings : IGridSettingsWithNotifications<OrderRecordTuple, OrderRecordTuplePredicate>, IEquatable<OrderBookGridSettings> {
+         [ProtoMember(1)]
+         public GridSettings general { get; set; }
+         [ProtoMember(2)]
+         List<OrderRecordTuplePredicateAnimations> _predicate_animations;
+
+         public OrderBookGridSettings() { }
+         public OrderBookGridSettings(GridSettings general = default, IEnumerable<OrderRecordTuplePredicateAnimations> predicate_animations = null) {
+            this.general = general;
+            _predicate_animations = new List<OrderRecordTuplePredicateAnimations>();
+            if (predicate_animations != null)
+               _predicate_animations.AddRange(predicate_animations);
+         }
+
+         public IReadOnlyList<OrderRecordTuplePredicateAnimations> predicate_animations => _predicate_animations ?? (_predicate_animations = new List<OrderRecordTuplePredicateAnimations>());
+         IEnumerable<IPredicateAnimationsData<OrderRecordTuple, OrderRecordTuplePredicate>> IGridSettingsWithNotifications<OrderRecordTuple, OrderRecordTuplePredicate>.predicate_animations => predicate_animations;
+
+         public OrderBookGridSettings with(GridSettings general) =>
+            new OrderBookGridSettings(general ?? this.general, predicate_animations);
+
+         public bool Equals(OrderBookGridSettings other) =>
+            other != null &&
+            EqualityComparer.null_check_equals(general, other.general) &&
+            EqualityComparer.safe_sequence_equals(predicate_animations, other.predicate_animations);
+
+         public override bool Equals(object obj) => Equals(obj as OrderBookGridSettings);
+         public override int GetHashCode() =>
+            EqualityComparer.aggregate_hash(
+               EqualityComparer.safe_get_hash_code(general),
+               EqualityComparer.safe_aggregate_hash(predicate_animations));
+      }
   }
 }
@@ -1,30 +1,38 @@
 using bts.api;
 using bts.api.orderman;
 using bts.spark;
+using mbts.persist;
 using mbts.spark;
 using mbts.spark.filters;
 using mbts.ui;
+using mbts.ui.settings;
 using mbts.ui.spark;
 using ProtoBuf;
 using System;
 using System.Collections.Generic;
+using System.Linq;
 using System.Reactive.Linq;
 using System.Threading.Tasks;
+using static mbts.spark.PAndLView;
+using static mbts.ui.controls.DIYGrid;

 namespace bts.shell {
   internal class PAndLWindowFactory : ShellWindowFactory<PAndLWindowFactory.PAndLStartupData> {
      readonly IBus _bus;
      readonly PAndLModel _model;
-      public PAndLWindowFactory(IShellModule owner, IBus bus, PAndLModel model) : base(owner, "SparkPAndL") {
+      readonly UserSettingsHub _settings_hub;
+
+      public PAndLWindowFactory(IShellModule owner, IBus bus, UserSettingsHub settings_hub, PAndLModel model) : base(owner, "SparkPAndL") {
         _bus = bus;
         _model = model;
-
+         _settings_hub = settings_hub;
         _dispose = bus.subscribe(SparkTags.ShowPAndLTag).OnDispatcher().Subscribe(show);
      }

+      public static string col_id(Columns col) => col.ToString();
+
      public override Task<IShellWindow> load(PAndLStartupData state) {
-         var w = new PAndLWindow(_model, this, _bus, state, SparkCommands.ShowPAndL.icon) as IShellWindow;
-         return Task.FromResult(w);
+         return Task.FromResult(_create(state));
      }

      async void show(PAndLStartupData startup_data) {
@@ -32,6 +40,14 @@ namespace bts.shell {
         _bus.post(SparkTags.ShowWindow, w);
      }

+      IShellWindow _create(PAndLStartupData state) {
+         var settings_manager = new WindowSettingsManager<GridSettings>(_settings_hub,
+            state.grid,
+            get: us => us.pnl_grid,
+            set: (us, gs) => us.with(provided_pnl_gridsettings: gs));
+         return new PAndLWindow(_model, this, _bus, state, SparkCommands.ShowPAndL.icon, settings_manager);
+      }
+
      [ProtoContract]
      public class PAndLStartupData {

@@ -40,21 +56,75 @@ namespace bts.shell {
         /// </summary>
         public PAndLStartupData() { }

-         public PAndLStartupData(List<SortingCriteria> sorting_criteria, FilterStates filters, pnl_calc_type calc_type) {
-            this.sort_criteria = sorting_criteria;
+         public PAndLStartupData(List<SortingCriteria> sorting_criteria, FilterStates filters, pnl_calc_type calc_type, GridSettings grid = default) {
+            _sort_criteria = sorting_criteria;
            this.filters = filters;
            this.calc_type = calc_type;
+            this.grid = grid;
         }

+         public static GridSettings DefaultGridSettings => GridSettings.Default.with(DefaultColumns.all, DefaultColumns.default_sorting_criterion);
+
+         public IReadOnlyList<SortingCriteria> sorting_criterion => _sort_criteria ?? (_sort_criteria = DefaultColumns.default_sorting_criterion.ToList());
+         public static PAndLStartupData Default() =>
+            new PAndLStartupData(null, new FilterStates(), pnl_calc_type.midpoint);
+
+
         [ProtoMember(5)]
-         public readonly List<SortingCriteria> sort_criteria;
+         List<SortingCriteria> _sort_criteria;
         [ProtoMember(10)]
         public FilterStates filters;
         [ProtoMember(15)]
         public pnl_calc_type calc_type;
         //[ProtoMember(20)]
         // ProtoMember 20 cannot be used further
+         [ProtoMember(25)]
+         public GridSettings grid;

+         static class DefaultColumns {
+
+            public static GridColumnSettings account => new GridColumnSettings(col_id(Columns.Account), DefaultColumnHeaders.Account, width: DefaultColumnWidths.Account);
+            public static GridColumnSettings exchange => new GridColumnSettings(col_id(Columns.Exchange), DefaultColumnHeaders.Exchange, width: DefaultColumnWidths.Exchange);
+            public static GridColumnSettings symbol => new GridColumnSettings(col_id(Columns.Symbol), DefaultColumnHeaders.Symbol, width: DefaultColumnWidths.Symbol);
+            public static GridColumnSettings security => new GridColumnSettings(col_id(Columns.Security), DefaultColumnHeaders.Security, width: DefaultColumnWidths.Security);
+            public static GridColumnSettings security_type => new GridColumnSettings(col_id(Columns.SecurityType), DefaultColumnHeaders.SecurityType, width: DefaultColumnWidths.SecurityType);
+            public static GridColumnSettings start_net_position => new GridColumnSettings(col_id(Columns.StartNetPos), DefaultColumnHeaders.StartNetPos, width: DefaultColumnWidths.Start_Net_Pos, horizontal_alignment: System.Windows.HorizontalAlignment.Right);
+            public static GridColumnSettings start_pnl => new GridColumnSettings(col_id(Columns.StartPNL), DefaultColumnHeaders.StartPnL, width: DefaultColumnWidths.PnL_Generic, horizontal_alignment: System.Windows.HorizontalAlignment.Right);
+            public static GridColumnSettings day_long_pnl => new GridColumnSettings(col_id(Columns.DayLong), DefaultColumnHeaders.DayLong, width: DefaultColumnWidths.PnL_Generic, horizontal_alignment: System.Windows.HorizontalAlignment.Right);
+            public static GridColumnSettings day_short_pnl => new GridColumnSettings(col_id(Columns.DayShort), DefaultColumnHeaders.DayShort, width: DefaultColumnWidths.PnL_Generic, horizontal_alignment: System.Windows.HorizontalAlignment.Right);
+            public static GridColumnSettings day_pnl => new GridColumnSettings(col_id(Columns.DayPNL), DefaultColumnHeaders.DayPnL, width: DefaultColumnWidths.PnL_Generic, horizontal_alignment: System.Windows.HorizontalAlignment.Right);
+            public static GridColumnSettings total_net_pos => new GridColumnSettings(col_id(Columns.TotalNetPos), DefaultColumnHeaders.TotalNetPos, width: DefaultColumnWidths.Total_Net_Pos, horizontal_alignment: System.Windows.HorizontalAlignment.Right);
+            public static GridColumnSettings total_pnl => new GridColumnSettings(col_id(Columns.TotalPNL), DefaultColumnHeaders.TotalPnL, width: DefaultColumnWidths.PnL_Generic, horizontal_alignment: System.Windows.HorizontalAlignment.Right);
+            public static GridColumnSettings pnl_price => new GridColumnSettings(col_id(Columns.PNLPrice), DefaultColumnHeaders.PnLPrice, width: DefaultColumnWidths.PnL_Generic, horizontal_alignment: System.Windows.HorizontalAlignment.Right);
+
+            public static IEnumerable<SortingCriteria> default_sorting_criterion {
+               get {
+                  yield return new SortingCriteria(account.id, true);
+                  yield return new SortingCriteria(exchange.id, true);
+                  yield return new SortingCriteria(symbol.id, true);
+                  yield return new SortingCriteria(security.id, true);
+               }
+            }
+
+            public static IEnumerable<GridColumnSettings> all {
+               get {
+                  yield return account;
+                  yield return exchange;
+                  yield return symbol;
+                  yield return security;
+                  yield return security_type;
+                  yield return start_net_position;
+                  yield return start_pnl;
+                  yield return day_long_pnl;
+                  yield return day_short_pnl;
+                  yield return day_pnl;
+                  yield return total_net_pos;
+                  yield return total_pnl;
+                  yield return pnl_price;
+               }
+            }
+
+         }
      }

      [ProtoContract]
@@ -1,4 +1,5 @@
 using bts.api;
+using bts.api.md.auxiliary;
 using bts.spark;
 using mbts.persist;
 using mbts.spark;
@@ -19,11 +20,12 @@ namespace bts.shell {
      PAndLWindowFactory _plwf;

      [ImportingConstructor]
-      public TradingShellModule(IBus bus, IWindowManager wm, INotificationService notification_service, INotificationServiceDataCache notification_service_data_cache, UserSettingsHub settings_hub, OrdersModel orders_model, PAndLModel pandl_model) {
-         _lwf = new LadderWindowFactory(this, bus, wm, settings_hub, orders_model);
-         _obwf = new OrderBookWindowFactory(this, bus, notification_service, notification_service_data_cache, orders_model);
-         _fwf = new FillsWindowFactory(this, bus, orders_model);
-         _plwf = new PAndLWindowFactory(this, bus, pandl_model);
+      public TradingShellModule(IBus bus, IWindowManager wm, INotificationService notification_service, INotificationServiceDataCache notification_service_data_cache,
+         UserSettingsHub settings_hub, OrdersModel orders_model, PAndLModel pandl_model, MarketDataAuxiliaryModel md_auxiliary_model) {
+         _lwf = new LadderWindowFactory(this, bus, wm, settings_hub, orders_model, md_auxiliary_model);
+         _obwf = new OrderBookWindowFactory(this, bus, notification_service, notification_service_data_cache, orders_model, settings_hub);
+         _fwf = new FillsWindowFactory(this, bus, settings_hub, orders_model);
+         _plwf = new PAndLWindowFactory(this, bus, settings_hub, pandl_model);
      }

      public ImageSource icon => Icons.Trades;
@@ -53,18 +53,22 @@ namespace mbts.ui {
         ToastNotificationController _toast_controller;
         SoundNotificationPlayer _sound_player;
         Dispatcher _dispatcher;
-         bool _toast_notifications_enabled, _sound_notifications_enabled = NotificationSettings.Default.sound_notification.enabled;
+         bool
+            _sound_notifications_enabled = Configuration.get<bts.config.toggles.SoundNotifications>().enabled,
+            _toast_notifications_enabled = Configuration.get<bts.config.toggles.ToastNotifications>().enabled;

         [ImportingConstructor]
         public Notifier(IBus bus, UserSettingsHub settings_hub) {
            _disposer = new ThreadSafeDisposable(dispose_core);
-            Thread thread = new Thread(start) {
-               IsBackground = true,
-               Priority = ThreadPriority.BelowNormal,
-               Name = "BTSNotifications"
-            };
-            thread.SetApartmentState(ApartmentState.STA);
-            thread.Start();
+            if (_sound_notifications_enabled || _toast_notifications_enabled) {
+               Thread thread = new Thread(start) {
+                  IsBackground = true,
+                  Priority = ThreadPriority.BelowNormal,
+                  Name = "BTSNotifications"
+               };
+               thread.SetApartmentState(ApartmentState.STA);
+               thread.Start();
+            }

            void start() {
               try {
@@ -102,7 +106,9 @@ namespace mbts.ui {
                     (_dispatcher = Dispatcher.CurrentDispatcher).UnhandledException += _on_dispatcher_UnhandledException;
                     Dispatcher.Run();
                  }
-               } catch (Exception ex) {
+               }
+               catch (NAudio.MmException) { }
+               catch (Exception ex) {
                  Log.assert(false, $"Exception in {Thread.CurrentThread.Name} thread: {ex}");
                  _disposer.Dispose();
               }
@@ -1,6 +1,7 @@
 using bts;
 using bts.api;
 using bts.api.orderman;
+using bts.utils;
 using mbts.ui;
 using mbts.ui.shell;
 using System;
@@ -11,6 +12,60 @@ using System.Linq;
 using System.Reactive.Linq;

 namespace mbts.spark {
+   struct OrderTemplateKey : IEquatable<OrderTemplateKey> {
+      public readonly CustomOrderDefinition.CustomOneofCase type;
+      public readonly string name;
+
+      public OrderTemplateKey(CustomOrderDefinition.CustomOneofCase type)
+         : this(type, OrderUtils.order_type_display_name(type)) { }
+
+      public OrderTemplateKey(CustomOrderDefinition.CustomOneofCase type, string name) {
+         this.type = type;
+         this.name = name;
+      }
+
+      public bool Equals(OrderTemplateKey other) =>
+         type == other.type &&
+         name == other.name;
+
+      public override bool Equals(object obj) =>
+         obj is OrderTemplateKey other && Equals(other);
+
+      public override int GetHashCode() =>
+         EqualityComparer.aggregate_hash(
+            type.GetHashCode(),
+            name == null ? 0 : name.GetHashCode());
+
+      public override string ToString() => $"{name}:{type}";
+
+      public static bool operator ==(OrderTemplateKey a, OrderTemplateKey b) => a.Equals(b);
+      public static bool operator !=(OrderTemplateKey a, OrderTemplateKey b) => !a.Equals(b);
+   }
+
+   struct OrderTemplateHeader : IEquatable<OrderTemplateHeader> {
+      public readonly OrderTemplateKey key;
+      // Note: display_name is NOT part of EQUALITY
+      public readonly string display_name;
+
+      public OrderTemplateHeader(CustomOrderDefinition.CustomOneofCase type)
+         : this(new OrderTemplateKey(type), OrderUtils.order_type_display_name(type)) { }
+
+      public OrderTemplateHeader(OrderTemplateKey key, string display_name) {
+         this.key = key;
+         this.display_name = display_name;
+      }
+
+      public bool Equals(OrderTemplateHeader other) =>
+         key.Equals(other.key);
+
+      public override bool Equals(object obj) =>
+         obj is OrderTemplateHeader other && Equals(other);
+
+      public override int GetHashCode() => key.GetHashCode();
+
+      public override string ToString() => $"{display_name} ({key})";
+   }
+
   class InlineOrderProperties {
      public readonly InlineUserProperty<AccountTuple> account;
      public readonly InlineUserProperty<TimeInForce> time_in_force;
@@ -39,7 +94,7 @@ namespace mbts.spark {
   class OrderPropertiesEditorVM : DisposableViewModelBase {
      readonly OrdersModel _model;
      readonly Property<SecurityImmutable> _security;
-      readonly SelectorProperty<AccountTuple> _accounts;
+      readonly SelectorProperty<AccountTuple, AccountTuple?> _accounts;
      readonly SelectorProperty<TimeInForce> _time_in_force;
      readonly SelectorProperty<IOrderTypeVM> _order_type;
      IDisposable _order_type_param_errors_sub;
@@ -58,14 +113,21 @@ namespace mbts.spark {
            nameof(selected_account),
            model.factory.subscribe_account_tuples(),
            order_properties.Select(ops => ops.account),
-            () => accounts?.FirstOrDefault() ?? default,
-            val => (!string.IsNullOrWhiteSpace(val.name) && accounts.Contains(val), "Please select an account")); 
+            a => new AccountTuple?(a),
+            () => {
+               foreach (var a in accounts) {
+                  return a;
+               }
+               return new AccountTuple?();
+            },
+            EqualityComparer<AccountTuple?>.Default,
+            new[] { new PropertyValidation<AccountTuple?>(a => (a.HasValue && !string.IsNullOrWhiteSpace(a.Value.name) && accounts.Contains(a.Value), "Please select an account")) }.ToReadOnlyList());
         _order_type = backing(
           nameof(selected_order_type),
-           security_source.Select(s => model.factory.default_order_type_defs(s).Select(create_order_type_vm)),
+           security_source.Select(s => model.factory.default_order_type_templates(s).Select(kv => create_order_type_vm(kv.Value, kv.Key.key.name, kv.Key.display_name))),
           order_properties.Select(get_order_type_vm_prop),
           get_default_order_type_vm,
-           (a, b) => a.order_type == b.order_type);
+           EqualityComparer.null_check_wrapper(OrderTypeVMExtensions.key_comparer));
         _order_type.Changed += on_selected_order_type_changed;
         _time_in_force = backing(
            nameof(selected_time_in_force),
@@ -77,19 +139,22 @@ namespace mbts.spark {
            tif => time_in_forces.Contains(tif));
          _dispose = Disposable.Create(() => _order_type.Changed -= on_selected_order_type_changed);
         // local methods
-         IOrderTypeVM create_order_type_vm(CustomOrderDefinitionImmutable cd) {
+         IOrderTypeVM create_order_type_vm(CustomOrderDefinitionImmutable cd, string id, string display_name) {
            IOrderTypeVM vm = null;
            if(cd.CustomCase == CustomOrderDefinition.CustomOneofCase.Dynamic)
-               vm = OrderTypeVMFactory.create(cd.CustomCase, model, security_md_source, cd.Dynamic.DynamicOrderType);        
+               vm = OrderTypeVMFactory.create(cd.CustomCase, id, display_name, model, security_md_source, cd.Dynamic.DynamicOrderType);        
            else
-               vm = OrderTypeVMFactory.create(cd.CustomCase, model, security_md_source);
+               vm = OrderTypeVMFactory.create(cd.CustomCase, id, display_name, model, security_md_source);
            vm.load_from(cd);
            return vm;
         }
         InlineUserProperty<IOrderTypeVM> get_order_type_vm_prop(InlineOrderProperties p) {
            if (!p.order_type_def.has_value)
               return new InlineUserProperty<IOrderTypeVM>();
-            return new InlineUserProperty<IOrderTypeVM>(create_order_type_vm(p.order_type_def.value), p.order_type_def.force_override);
+            return new InlineUserProperty<IOrderTypeVM>(
+               create_order_type_vm(p.order_type_def.value, p.order_type_def.value.CustomCase.ToString(),
+               OrderUtils.order_type_display_name(p.order_type_def.value.CustomCase)),
+               p.order_type_def.force_override);
         }
         IOrderTypeVM get_default_order_type_vm() {
            var ot = model.factory.default_order_type(security);
@@ -114,13 +179,13 @@ namespace mbts.spark {

      public SecurityImmutable security => _security.Value;
      public ReadOnlyObservableCollection<AccountTuple> accounts => _accounts.items;
-      public AccountTuple selected_account { get => _accounts.selected_item; set => _accounts.selected_item = value; }
+      public AccountTuple? selected_account { get => _accounts.selected_item; set => _accounts.selected_item = value; }
      public ReadOnlyObservableCollection<TimeInForce> time_in_forces => _time_in_force.items;
      public TimeInForce selected_time_in_force { get => _time_in_force.selected_item; set => _time_in_force.selected_item = value; }
      public ReadOnlyObservableCollection<IOrderTypeVM> order_types => _order_type.items;
      public IOrderTypeVM selected_order_type { get => _order_type.selected_item; set => _order_type.selected_item = value; }

-      public IObservable<AccountTuple> observe_account(bool start_immediately = false) =>
+      public IObservable<AccountTuple?> observe_account(bool start_immediately = false) =>
         _accounts.observe_current(start_immediately);

      public IObservable<TimeInForce> observe_time_in_force(bool start_immediately = false) =>
@@ -17,22 +17,22 @@ namespace mbts.spark
   {
      class InlineCoverOrderProperties
      {
-         public InlineCoverOrderProperties(CustomOneofCase selected_child_order_type, IReadOnlyCollection<CustomOneofCase> child_order_types)
+         public InlineCoverOrderProperties(OrderTemplateHeader selected_child_order_type, IReadOnlyCollection<OrderTemplateHeader> child_order_types)
         {
            ExceptionAssert.InvalidOperation.That(child_order_types.Contains(selected_child_order_type), $"Child order type {selected_child_order_type} is not in child_order_types");
-            this.selected_child_order_type = new InlineUserProperty<CustomOneofCase>(selected_child_order_type, true);
-            this.child_order_types = new InlineUserProperty<IReadOnlyCollection<CustomOneofCase>>(child_order_types, true);
+            this.selected_child_order_type = new InlineUserProperty<OrderTemplateHeader>(selected_child_order_type, true);
+            this.child_order_types = new InlineUserProperty<IReadOnlyCollection<OrderTemplateHeader>>(child_order_types, true);

            var hedgetype = CustomOneofCase.Limit;
-            this.selected_hedge_order_type = new InlineUserProperty<CustomOneofCase>(hedgetype, true);
-            this.hedge_order_types = new InlineUserProperty<IReadOnlyCollection<CustomOneofCase>>(child_order_types, true);
+            this.selected_hedge_order_type = new InlineUserProperty<OrderTemplateHeader>(new OrderTemplateHeader(hedgetype), true);
+            this.hedge_order_types = new InlineUserProperty<IReadOnlyCollection<OrderTemplateHeader>>(child_order_types, true);

            hedge_ticks = new InlineUserProperty<int>(1, false);
         }
-         public readonly InlineUserProperty<CustomOneofCase> selected_child_order_type;
-         public readonly InlineUserProperty<IReadOnlyCollection<CustomOneofCase>> child_order_types;
-         public readonly InlineUserProperty<CustomOneofCase> selected_hedge_order_type;
-         public readonly InlineUserProperty<IReadOnlyCollection<CustomOneofCase>> hedge_order_types;
+         public readonly InlineUserProperty<OrderTemplateHeader> selected_child_order_type;
+         public readonly InlineUserProperty<IReadOnlyCollection<OrderTemplateHeader>> child_order_types;
+         public readonly InlineUserProperty<OrderTemplateHeader> selected_hedge_order_type;
+         public readonly InlineUserProperty<IReadOnlyCollection<OrderTemplateHeader>> hedge_order_types;

         public readonly InlineUserProperty<int> hedge_ticks;

@@ -42,25 +42,25 @@ namespace mbts.spark
      {
         readonly IObservable<SecurityMD> _security_md_source;
         SecurityImmutable? _security;
-         ObservableCollection<CustomOneofCase> _order_types = new ObservableCollection<CustomOneofCase>();
-         ObservableAutoWrapper<IOrderTypeVM, CustomOneofCase> _child_order_choices;
+         ObservableCollection<OrderTemplateHeader> _order_types = new ObservableCollection<OrderTemplateHeader>();
+         ObservableAutoWrapper<IOrderTypeVM, OrderTemplateHeader> _child_order_choices;
         InlineCoverOrderProperties _inline_props;
         IOrderTypeVM _child_order;
         IDisposable _dispose, _child_order_errors_sub;

-         ObservableAutoWrapper<IOrderTypeVM, CustomOneofCase> _hedge_order_choices;
+         ObservableAutoWrapper<IOrderTypeVM, OrderTemplateHeader> _hedge_order_choices;
         IOrderTypeVM _hedge_order;
         IDisposable _hedge_order_errors_sub;

         public int hedge_ticks { get; set; } = 1;

-         public CoverOrderVM(OrdersModel model, IObservable<SecurityMD> security_md_source)
+         public CoverOrderVM(OrdersModel model, IObservable<SecurityMD> security_md_source, string id, string display_name)
            : this(model, security_md_source, security_md_source.Select(smd =>
-            new InlineCoverOrderProperties(model.factory.default_order_type(smd.security), model.factory.default_order_types(smd.security).ToList())))
+            new InlineCoverOrderProperties(new OrderTemplateHeader(model.factory.default_order_type(smd.security)), model.factory.default_order_types(smd.security).Select(t => new OrderTemplateHeader(t)).ToList())), id, display_name)
         { }

         public CoverOrderVM(OrdersModel model, IObservable<SecurityMD> security_md_source,
-                            IObservable<InlineCoverOrderProperties> inline_properties) : base(model)
+                            IObservable<InlineCoverOrderProperties> inline_properties, string id, string display_name) : base(model, id, display_name)
         {
            _security_md_source = security_md_source;
            _dispose = Disposable.Create(
@@ -75,11 +75,11 @@ namespace mbts.spark
                  }
                  if (_child_order_choices != null && (_child_order == null || p.selected_child_order_type.force_override))
                  {
-                     _select_child_order(p.selected_child_order_type.value);
+                     _select_child_order(p.selected_child_order_type.value.key.type);
                  }
                  if (_hedge_order_choices != null && (_hedge_order == null || p.selected_hedge_order_type.force_override))
                  {
-                     _select_hedge_order(p.selected_hedge_order_type.value);
+                     _select_hedge_order(p.selected_hedge_order_type.value.key.type);
                  }
                  if (p.hedge_ticks.force_override)
                  {
@@ -116,7 +116,7 @@ namespace mbts.spark
            get
            {
               if (_child_order_choices == null)
-                  _child_order_choices = new ObservableAutoWrapper<IOrderTypeVM, CustomOneofCase>(_order_types, ot => create(ot, model, _security_md_source));
+                  _child_order_choices = new ObservableAutoWrapper<IOrderTypeVM, OrderTemplateHeader>(_order_types, ot => create(ot.key.type, ot.key.name, ot.display_name, model, _security_md_source));
               return _child_order_choices;
            }
         }
@@ -126,7 +126,7 @@ namespace mbts.spark
            get
            {
               if (_hedge_order_choices == null)
-                  _hedge_order_choices = new ObservableAutoWrapper<IOrderTypeVM, CustomOneofCase>(_order_types, ot => create(ot, model, _security_md_source));
+                  _hedge_order_choices = new ObservableAutoWrapper<IOrderTypeVM, OrderTemplateHeader>(_order_types, ot => create(ot.key.type, ot.key.name, ot.display_name, model, _security_md_source));
               return _hedge_order_choices;
            }
         }
@@ -200,7 +200,7 @@ namespace mbts.spark
         void _select_child_order()
         {
            CustomOneofCase ot = _inline_props != null && _inline_props.selected_child_order_type.has_value ?
-               _inline_props.selected_child_order_type.value :
+               _inline_props.selected_child_order_type.value.key.type :
               model.factory.default_order_type(_security.Value, true);
            _select_child_order(ot);
         }
@@ -216,7 +216,7 @@ namespace mbts.spark
         void _select_hedge_order()
         {
            CustomOneofCase ot = _inline_props != null && _inline_props.selected_hedge_order_type.has_value ?
-               _inline_props.selected_hedge_order_type.value :
+               _inline_props.selected_hedge_order_type.value.key.type :
               model.factory.default_order_type(_security.Value, true);
            _select_hedge_order(ot);
         }
@@ -53,14 +53,14 @@ namespace mbts.spark
   {
      class InlineDynamicOrderProperties
      {
-         public InlineDynamicOrderProperties(CustomOneofCase selected_child_order_type, IReadOnlyCollection<CustomOneofCase> child_order_types)
+         public InlineDynamicOrderProperties(OrderTemplateHeader selected_child_order_type, IReadOnlyCollection<OrderTemplateHeader> child_order_types)
         {
            ExceptionAssert.InvalidOperation.That(child_order_types.Contains(selected_child_order_type), $"Child order type {selected_child_order_type} is not in child_order_types");
-            this.selected_child_order_type = new InlineUserProperty<CustomOneofCase>(selected_child_order_type, true);
-            this.child_order_types = new InlineUserProperty<IReadOnlyCollection<CustomOneofCase>>(child_order_types, true);
+            this.selected_child_order_type = new InlineUserProperty<OrderTemplateHeader>(selected_child_order_type, true);
+            this.child_order_types = new InlineUserProperty<IReadOnlyCollection<OrderTemplateHeader>>(child_order_types, true);
         }
-         public readonly InlineUserProperty<CustomOneofCase> selected_child_order_type;
-         public readonly InlineUserProperty<IReadOnlyCollection<CustomOneofCase>> child_order_types;
+         public readonly InlineUserProperty<OrderTemplateHeader> selected_child_order_type;
+         public readonly InlineUserProperty<IReadOnlyCollection<OrderTemplateHeader>> child_order_types;
      }

      class DynamicOrderVM : OrderTypeVMBase<DynamicOrderDefinition>, IHierarchicalOrderTypeVM, IDisposable
@@ -68,8 +68,8 @@ namespace mbts.spark

         readonly IObservable<SecurityMD> _security_md_source;
         SecurityImmutable? _security;
-         ObservableCollection<CustomOneofCase> _order_types = new ObservableCollection<CustomOneofCase>();
-         ObservableAutoWrapper<IOrderTypeVM, CustomOneofCase> _child_order_choices;
+         ObservableCollection<OrderTemplateHeader> _order_types = new ObservableCollection<OrderTemplateHeader>();
+         ObservableAutoWrapper<IOrderTypeVM, OrderTemplateHeader> _child_order_choices;
         InlineDynamicOrderProperties _inline_props;
         IOrderTypeVM _child_order;
         IDisposable _dispose, _child_order_errors_sub;
@@ -77,13 +77,13 @@ namespace mbts.spark
         string _dyn_type;
         List<NameValueVM> _parameters;

-         public DynamicOrderVM(OrdersModel model, IObservable<SecurityMD> security_md_source, string dyn_type)
+         public DynamicOrderVM(OrdersModel model, IObservable<SecurityMD> security_md_source, string dyn_type, string id, string display_name)
            : this(model, security_md_source, dyn_type, security_md_source.Select(smd =>
-            new InlineDynamicOrderProperties(model.factory.default_order_type(smd.security), model.factory.default_order_types(smd.security).ToList())))
+            new InlineDynamicOrderProperties(new OrderTemplateHeader(model.factory.default_order_type(smd.security)), model.factory.default_order_types(smd.security).Select(t => new OrderTemplateHeader(t)).ToList())), id, display_name)
         { }

         public DynamicOrderVM(OrdersModel model, IObservable<SecurityMD> security_md_source, string dyn_type,
-                               IObservable<InlineDynamicOrderProperties> inline_properties) : base(model)
+                               IObservable<InlineDynamicOrderProperties> inline_properties, string id, string display_name) : base(model, id, display_name)
         {
            _security_md_source = security_md_source;
            _dyn_type = dyn_type;
@@ -100,7 +100,7 @@ namespace mbts.spark
                  }
                  if (_child_order_choices != null && (_child_order == null || p.selected_child_order_type.force_override))
                  {
-                     _select_child_order(p.selected_child_order_type.value);
+                     _select_child_order(p.selected_child_order_type.value.key.type);
                  }
                  _inline_props = p;
                  _validate();
@@ -139,7 +139,7 @@ namespace mbts.spark
            get
            {
               if (_child_order_choices == null)
-                  _child_order_choices = new ObservableAutoWrapper<IOrderTypeVM, CustomOneofCase>(_order_types, ot => create(ot, model, _security_md_source));
+                  _child_order_choices = new ObservableAutoWrapper<IOrderTypeVM, OrderTemplateHeader>(_order_types, ot => create(ot.key.type, ot.key.name, ot.display_name, model, _security_md_source));
               return _child_order_choices;
            }
         }
@@ -185,7 +185,7 @@ namespace mbts.spark
         void _select_child_order()
         {
            CustomOneofCase ot = _inline_props != null && _inline_props.selected_child_order_type.has_value ?
-               _inline_props.selected_child_order_type.value :
+               _inline_props.selected_child_order_type.value.key.type :
               model.factory.default_order_type(_security.Value, true);
            _select_child_order(ot);
         }
@@ -1,11 +1,13 @@
 using bts.api.orderman;
 using bts.spark;
+using bts.utils;
 using System.Collections.Generic;
 using System.Windows.Input;
 using static bts.api.orderman.CustomOrderDefinition;

 namespace mbts.spark {
   interface IOrderTypeVM : IPropertyWrapperVM<CustomOrderDefinition, CustomOrderDefinitionImmutable> {
+      string id { get; }
      CustomOneofCase order_type { get; }
      string type_name { get; }
      bool is_bts_type { get; }
@@ -21,4 +23,12 @@ namespace mbts.spark {
      ICollection<IOrderTypeVM> child_order_types { get; }
      IOrderTypeVM child_order { get; }
   }
+
+   static class OrderTypeVMExtensions {
+      public static IEqualityComparer<IOrderTypeVM> key_comparer =>
+         EqualityComparer.Create<IOrderTypeVM, OrderTemplateKey>(a => a.key());
+
+      public static OrderTemplateKey key(this IOrderTypeVM vm) =>
+         new OrderTemplateKey(vm.order_type, vm.id);
+   }
 }
@@ -14,34 +14,34 @@ using static bts.api.orderman.CustomOrderDefinition;
 namespace mbts.spark {
   static partial class OrderTypeVMFactory {
      class InlineIcebergOrderProperties {
-         public InlineIcebergOrderProperties(CustomOneofCase selected_child_order_type, IReadOnlyCollection<CustomOneofCase> child_order_types) {
+         public InlineIcebergOrderProperties(OrderTemplateHeader selected_child_order_type, IReadOnlyCollection<OrderTemplateHeader> child_order_types) {
            ExceptionAssert.InvalidOperation.That(child_order_types.Contains(selected_child_order_type), $"Child order type {selected_child_order_type} is not in child_order_types");
-            this.selected_child_order_type = new InlineUserProperty<CustomOneofCase>(selected_child_order_type, true);
-            this.child_order_types = new InlineUserProperty<IReadOnlyCollection<CustomOneofCase>>(child_order_types, true);
+            this.selected_child_order_type = new InlineUserProperty<OrderTemplateHeader>(selected_child_order_type, true);
+            this.child_order_types = new InlineUserProperty<IReadOnlyCollection<OrderTemplateHeader>>(child_order_types, true);
            show_quantity = new InlineUserProperty<double>(1, true);
         }
-         public readonly InlineUserProperty<CustomOneofCase> selected_child_order_type;
-         public readonly InlineUserProperty<IReadOnlyCollection<CustomOneofCase>> child_order_types;
+         public readonly InlineUserProperty<OrderTemplateHeader> selected_child_order_type;
+         public readonly InlineUserProperty<IReadOnlyCollection<OrderTemplateHeader>> child_order_types;
         public readonly InlineUserProperty<double> show_quantity;
      }

      class IcebergOrderVM : OrderTypeVMBase<IcebergOrderDefinition>, IHierarchicalOrderTypeVM, IDisposable {
         readonly IObservable<SecurityMD> _security_md_source;
         SecurityImmutable? _security;
-         ObservableCollection<CustomOneofCase> _order_types = new ObservableCollection<CustomOneofCase>();
-         ObservableAutoWrapper<IOrderTypeVM, CustomOneofCase> _child_order_choices;
+         ObservableCollection<OrderTemplateHeader> _order_types = new ObservableCollection<OrderTemplateHeader>();
+         ObservableAutoWrapper<IOrderTypeVM, OrderTemplateHeader> _child_order_choices;
         InlineIcebergOrderProperties _inline_props;
         IOrderTypeVM _child_order;
         IDisposable _dispose, _child_order_errors_sub;

-         public IcebergOrderVM(OrdersModel model, IObservable<SecurityMD> security_md_source)
+         public IcebergOrderVM(OrdersModel model, IObservable<SecurityMD> security_md_source, string id, string display_name)
            : this(model, security_md_source, security_md_source.Select(smd =>
-            new InlineIcebergOrderProperties(model.factory.default_order_type(smd.security), model.factory.default_order_types(smd.security).ToList()))) { }
+            new InlineIcebergOrderProperties(new OrderTemplateHeader(model.factory.default_order_type(smd.security)), model.factory.default_order_types(smd.security).Select(t => new OrderTemplateHeader(t)).ToList())), id, display_name) { }

         public IcebergOrderVM(OrdersModel model,
            IObservable<SecurityMD> security_md_source,
-            IObservable<InlineIcebergOrderProperties> inline_properties)
-            : base(model) {
+            IObservable<InlineIcebergOrderProperties> inline_properties, string id, string display_name)
+            : base(model, id, display_name) {
            _security_md_source = security_md_source;
            _dispose = Disposable.Create(
               security_md_source.OnDispatcher()
@@ -52,7 +52,7 @@ namespace mbts.spark {
                     _order_types.SetItems(p.child_order_types.value);
                  }
                  if (_child_order_choices != null && (_child_order == null || p.selected_child_order_type.force_override)) {
-                     _select_child_order(p.selected_child_order_type.value);
+                     _select_child_order(p.selected_child_order_type.value.key.type);
                  }
                  if (p.show_quantity.force_override) {
                     show_quantity = p.show_quantity.value;
@@ -68,7 +68,7 @@ namespace mbts.spark {
         public ICollection<IOrderTypeVM> child_order_types {
            get {
               if (_child_order_choices == null) {
-                  _child_order_choices = new ObservableAutoWrapper<IOrderTypeVM, CustomOneofCase>(_order_types, ot => create(ot, model, _security_md_source));
+                  _child_order_choices = new ObservableAutoWrapper<IOrderTypeVM, OrderTemplateHeader>(_order_types, ot => create(ot.key.type, ot.key.name, ot.display_name, model, _security_md_source));
               }
               return _child_order_choices;
            }
@@ -122,7 +122,7 @@ namespace mbts.spark {

         void _select_child_order() {
            CustomOneofCase ot = _inline_props != null && _inline_props.selected_child_order_type.has_value ?
-               _inline_props.selected_child_order_type.value :
+               _inline_props.selected_child_order_type.value.key.type :
               model.factory.default_order_type(_security.Value, true);
            _select_child_order(ot);
         }
@@ -17,19 +17,19 @@ namespace mbts.spark
   {
      class InlineJoinOrderProperties 
      {
-         public InlineJoinOrderProperties (CustomOneofCase selected_child_order_type, IReadOnlyCollection<CustomOneofCase> child_order_types) 
+         public InlineJoinOrderProperties (OrderTemplateHeader selected_child_order_type, IReadOnlyCollection<OrderTemplateHeader> child_order_types) 
         {
            ExceptionAssert.InvalidOperation.That(child_order_types.Contains(selected_child_order_type), $"Child order type {selected_child_order_type} is not in child_order_types");
-            this.selected_child_order_type = new InlineUserProperty<CustomOneofCase>(selected_child_order_type, true);
-            this.child_order_types = new InlineUserProperty<IReadOnlyCollection<CustomOneofCase>>(child_order_types, true);
+            this.selected_child_order_type = new InlineUserProperty<OrderTemplateHeader>(selected_child_order_type, true);
+            this.child_order_types = new InlineUserProperty<IReadOnlyCollection<OrderTemplateHeader>>(child_order_types, true);

            var hedgetype = CustomOneofCase.Lean;
-            if(!child_order_types.Contains(hedgetype))
+            if(!child_order_types.Any(t => t.key.type == hedgetype))
               hedgetype = CustomOneofCase.Limit;
            
            //ExceptionAssert.InvalidOperation.That(child_order_types.Contains(hedgetype), $"Hedge order type {hedgetype} is not in hedge_order_types");
-            this.selected_hedge_order_type = new InlineUserProperty<CustomOneofCase>(hedgetype, true);
-            this.hedge_order_types = new InlineUserProperty<IReadOnlyCollection<CustomOneofCase>>(child_order_types, true);
+            this.selected_hedge_order_type = new InlineUserProperty<OrderTemplateHeader>(new OrderTemplateHeader(hedgetype), true);
+            this.hedge_order_types = new InlineUserProperty<IReadOnlyCollection<OrderTemplateHeader>>(child_order_types, true);

            tick_offset_on_deploy = new InlineUserProperty<uint>(0, false);
            join_threshold = new InlineUserProperty<bts.spark.QuantityMeasure>(
@@ -37,10 +37,10 @@ namespace mbts.spark
            enable_hedge = new InlineUserProperty<bool>(false, false);
            hedge_ticks = new InlineUserProperty<int>(1, false);
         }
-         public readonly InlineUserProperty<CustomOneofCase> selected_child_order_type;
-         public readonly InlineUserProperty<IReadOnlyCollection<CustomOneofCase>> child_order_types;
-         public readonly InlineUserProperty<CustomOneofCase> selected_hedge_order_type;
-         public readonly InlineUserProperty<IReadOnlyCollection<CustomOneofCase>> hedge_order_types;
+         public readonly InlineUserProperty<OrderTemplateHeader> selected_child_order_type;
+         public readonly InlineUserProperty<IReadOnlyCollection<OrderTemplateHeader>> child_order_types;
+         public readonly InlineUserProperty<OrderTemplateHeader> selected_hedge_order_type;
+         public readonly InlineUserProperty<IReadOnlyCollection<OrderTemplateHeader>> hedge_order_types;


         public readonly InlineUserProperty<uint> tick_offset_on_deploy;
@@ -55,13 +55,13 @@ namespace mbts.spark
      {
         readonly IObservable<SecurityMD> _security_md_source;
         SecurityImmutable? _security;
-         ObservableCollection<CustomOneofCase> _order_types = new ObservableCollection<CustomOneofCase>();
-         ObservableAutoWrapper<IOrderTypeVM, CustomOneofCase> _child_order_choices;
+         ObservableCollection<OrderTemplateHeader> _order_types = new ObservableCollection<OrderTemplateHeader>();
+         ObservableAutoWrapper<IOrderTypeVM, OrderTemplateHeader> _child_order_choices;
         InlineJoinOrderProperties _inline_props;
         IOrderTypeVM _child_order;
         IDisposable _dispose, _child_order_errors_sub;

-         ObservableAutoWrapper<IOrderTypeVM, CustomOneofCase> _hedge_order_choices;
+         ObservableAutoWrapper<IOrderTypeVM, OrderTemplateHeader> _hedge_order_choices;
         IOrderTypeVM _hedge_order;
         IDisposable _hedge_order_errors_sub;

@@ -79,12 +79,12 @@ namespace mbts.spark
         } 
         public int hedge_ticks { get; set; } = 1;

-         public JoinOrderVM(OrdersModel model, IObservable<SecurityMD> security_md_source)
+         public JoinOrderVM(OrdersModel model, IObservable<SecurityMD> security_md_source, string id, string display_name)
            : this(model, security_md_source, security_md_source.Select(smd =>
-            new InlineJoinOrderProperties(model.factory.default_order_type(smd.security), model.factory.default_order_types(smd.security).ToList()))) { }
+            new InlineJoinOrderProperties(new OrderTemplateHeader(model.factory.default_order_type(smd.security)), model.factory.default_order_types(smd.security).Select(t => new OrderTemplateHeader(t)).ToList())), id, display_name) { }

         public JoinOrderVM(OrdersModel model, IObservable<SecurityMD> security_md_source,
-                            IObservable<InlineJoinOrderProperties> inline_properties) : base(model) 
+                            IObservable<InlineJoinOrderProperties> inline_properties, string id, string display_name) : base(model, id, display_name) 
         {
            _security_md_source = security_md_source;
            _dispose = Disposable.Create(
@@ -98,11 +98,11 @@ namespace mbts.spark
                  }
                  if (_child_order_choices != null && (_child_order == null || p.selected_child_order_type.force_override)) 
                  {
-                     _select_child_order(p.selected_child_order_type.value);
+                     _select_child_order(p.selected_child_order_type.value.key.type);
                  }
                  if (_hedge_order_choices != null && (_hedge_order == null || p.selected_hedge_order_type.force_override))
                  {
-                     _select_hedge_order(p.selected_hedge_order_type.value);
+                     _select_hedge_order(p.selected_hedge_order_type.value.key.type);
                  }
                  if (p.tick_offset_on_deploy.force_override) 
                  {
@@ -157,7 +157,7 @@ namespace mbts.spark
            get 
            {
               if (_child_order_choices == null) 
-                  _child_order_choices = new ObservableAutoWrapper<IOrderTypeVM, CustomOneofCase>(_order_types, ot => create(ot, model, _security_md_source));
+                  _child_order_choices = new ObservableAutoWrapper<IOrderTypeVM, OrderTemplateHeader>(_order_types, ot => create(ot.key.type, ot.key.name, ot.display_name, model, _security_md_source));
               return _child_order_choices;
            }
         }
@@ -167,7 +167,7 @@ namespace mbts.spark
            get
            {
               if (_hedge_order_choices == null)
-                  _hedge_order_choices = new ObservableAutoWrapper<IOrderTypeVM, CustomOneofCase>(_order_types, ot => create(ot, model, _security_md_source));
+                  _hedge_order_choices = new ObservableAutoWrapper<IOrderTypeVM, OrderTemplateHeader>(_order_types, ot => create(ot.key.type, ot.key.name, ot.display_name, model, _security_md_source));
               return _hedge_order_choices;
            }
         }         
@@ -241,7 +241,7 @@ namespace mbts.spark
         void _select_child_order() 
         {
            CustomOneofCase ot = _inline_props != null && _inline_props.selected_child_order_type.has_value ?
-               _inline_props.selected_child_order_type.value :
+               _inline_props.selected_child_order_type.value.key.type :
               model.factory.default_order_type(_security.Value, true);
            _select_child_order(ot);
         }
@@ -257,7 +257,7 @@ namespace mbts.spark
         void _select_hedge_order()
         {
            CustomOneofCase ot = _inline_props != null && _inline_props.selected_hedge_order_type.has_value ?
-               _inline_props.selected_hedge_order_type.value :
+               _inline_props.selected_hedge_order_type.value.key.type :
               model.factory.default_order_type(_security.Value, true);
            _select_hedge_order(ot);
         }
@@ -17,18 +17,18 @@ namespace mbts.spark
   {
      class InlineLeanOrderProperties 
      {
-         public InlineLeanOrderProperties (CustomOneofCase selected_child_order_type, IReadOnlyCollection<CustomOneofCase> child_order_types) 
+         public InlineLeanOrderProperties (OrderTemplateHeader selected_child_order_type, IReadOnlyCollection<OrderTemplateHeader> child_order_types) 
         {
            ExceptionAssert.InvalidOperation.That(child_order_types.Contains(selected_child_order_type), $"Child order type {selected_child_order_type} is not in child_order_types");
-            this.selected_child_order_type = new InlineUserProperty<CustomOneofCase>(selected_child_order_type, true);
-            this.child_order_types = new InlineUserProperty<IReadOnlyCollection<CustomOneofCase>>(child_order_types, true);
+            this.selected_child_order_type = new InlineUserProperty<OrderTemplateHeader>(selected_child_order_type, true);
+            this.child_order_types = new InlineUserProperty<IReadOnlyCollection<OrderTemplateHeader>>(child_order_types, true);
            cross_threshold = new InlineUserProperty<bts.spark.QuantityMeasure>(
                              new bts.spark.QuantityMeasure() { Ratio = 1.0, Absolute = 1}, false);
            max_chase_ticks = new InlineUserProperty<uint>(2, false);
            trade_toward_behavior = new InlineUserProperty<LeanOrderDefinition.Types.OnToward>(LeanOrderDefinition.Types.OnToward.Cancel, false);
         }
-         public readonly InlineUserProperty<CustomOneofCase> selected_child_order_type;
-         public readonly InlineUserProperty<IReadOnlyCollection<CustomOneofCase>> child_order_types;
+         public readonly InlineUserProperty<OrderTemplateHeader> selected_child_order_type;
+         public readonly InlineUserProperty<IReadOnlyCollection<OrderTemplateHeader>> child_order_types;
         
         public readonly InlineUserProperty<bts.spark.QuantityMeasure> cross_threshold;
         public readonly InlineUserProperty<uint> max_chase_ticks;
@@ -39,8 +39,8 @@ namespace mbts.spark
      {
         readonly IObservable<SecurityMD> _security_md_source;
         SecurityImmutable? _security;
-         ObservableCollection<CustomOneofCase> _order_types = new ObservableCollection<CustomOneofCase>();
-         ObservableAutoWrapper<IOrderTypeVM, CustomOneofCase> _child_order_choices;
+         ObservableCollection<OrderTemplateHeader> _order_types = new ObservableCollection<OrderTemplateHeader>();
+         ObservableAutoWrapper<IOrderTypeVM, OrderTemplateHeader> _child_order_choices;
         InlineLeanOrderProperties _inline_props;
         IOrderTypeVM _child_order;
         IDisposable _dispose, _child_order_errors_sub;
@@ -49,12 +49,12 @@ namespace mbts.spark
         public uint max_chase_ticks { get; set; } = 2;
         public LeanOrderDefinition.Types.OnToward trade_toward_behavior { get; set; } = LeanOrderDefinition.Types.OnToward.Cancel;      

-         public LeanOrderVM(OrdersModel model, IObservable<SecurityMD> security_md_source)
+         public LeanOrderVM(OrdersModel model, IObservable<SecurityMD> security_md_source, string id, string display_name)
            : this(model, security_md_source, security_md_source.Select(smd =>
-            new InlineLeanOrderProperties(model.factory.default_order_type(smd.security), model.factory.default_order_types(smd.security).ToList()))) { }
+            new InlineLeanOrderProperties(new OrderTemplateHeader(model.factory.default_order_type(smd.security)), model.factory.default_order_types(smd.security).Select(t => new OrderTemplateHeader(t)).ToList())), id, display_name) { }

         public LeanOrderVM(OrdersModel model, IObservable<SecurityMD> security_md_source,
-                            IObservable<InlineLeanOrderProperties> inline_properties) : base(model) 
+                            IObservable<InlineLeanOrderProperties> inline_properties, string id, string display_name) : base(model, id, display_name) 
         {
            _security_md_source = security_md_source;
            _dispose = Disposable.Create(
@@ -68,7 +68,7 @@ namespace mbts.spark
                  }
                  if (_child_order_choices != null && (_child_order == null || p.selected_child_order_type.force_override)) 
                  {
-                     _select_child_order(p.selected_child_order_type.value);
+                     _select_child_order(p.selected_child_order_type.value.key.type);
                  }                  
                  if (p.cross_threshold.force_override)
                  {
@@ -115,7 +115,7 @@ namespace mbts.spark
            get 
            {
               if (_child_order_choices == null) 
-                  _child_order_choices = new ObservableAutoWrapper<IOrderTypeVM, CustomOneofCase>(_order_types, ot => create(ot, model, _security_md_source));
+                  _child_order_choices = new ObservableAutoWrapper<IOrderTypeVM, OrderTemplateHeader>(_order_types, ot => create(ot.key.type, ot.key.name, ot.display_name, model, _security_md_source));
               return _child_order_choices;
            }
         }
@@ -161,7 +161,7 @@ namespace mbts.spark
         void _select_child_order() 
         {
            CustomOneofCase ot = _inline_props != null && _inline_props.selected_child_order_type.has_value ?
-               _inline_props.selected_child_order_type.value :
+               _inline_props.selected_child_order_type.value.key.type :
               model.factory.default_order_type(_security.Value, true);
            _select_child_order(ot);
         }
@@ -3,7 +3,7 @@
 namespace mbts.spark {
   static partial class OrderTypeVMFactory {
      private class LimitOrderVM : OrderTypeVMBase<LimitOrderDefinition> {
-         internal LimitOrderVM(OrdersModel model) : base(model) { }
+         internal LimitOrderVM(OrdersModel model) : base(model, "Limit", OrderUtils.order_type_display_name(CustomOrderDefinition.CustomOneofCase.Limit)) { }

         public override void assign_to(CustomOrderDefinition value) =>
            value.Limit = factory.limit_order();
@@ -3,7 +3,7 @@
 namespace mbts.spark {
   static partial class OrderTypeVMFactory {
      private class MarketOrderVM : OrderTypeVMBase<MarketOrderDefinition> {
-         internal MarketOrderVM(OrdersModel model) : base(model) { }
+         internal MarketOrderVM(OrdersModel model) : base(model, "Market", OrderUtils.order_type_display_name(CustomOrderDefinition.CustomOneofCase.Market)) { }

         public override void assign_to(CustomOrderDefinition parent) =>
            parent.Market = factory.market_order();
@@ -12,36 +12,36 @@ namespace mbts.spark {
   static partial class OrderTypeVMFactory {
      public static IOrderTypeVM market(OrdersModel model) => new MarketOrderVM(model);
      public static IOrderTypeVM limit(OrdersModel model) => new LimitOrderVM(model);
-      public static IOrderTypeVM stop(OrdersModel model) => new StopOrderVM(model);
-      public static IOrderTypeVM stop_limit(OrdersModel model, IObservable<SecurityMD> security_md_source) => new StopLimitOrderVM(model, security_md_source);
-      public static IOrderTypeVM time_box(OrdersModel model, IObservable<SecurityMD> security_md_source) => new TimeBoxOrderVM(model, security_md_source);
-      public static IOrderTypeVM tick(OrdersModel model, IObservable<SecurityMD> security_md_source) => new TickOrderVM(model, security_md_source);
-      public static IOrderTypeVM lean(OrdersModel model, IObservable<SecurityMD> security_md_source) => new LeanOrderVM(model, security_md_source);
-      public static IOrderTypeVM join(OrdersModel model, IObservable<SecurityMD> security_md_source) => new JoinOrderVM(model, security_md_source);
-      public static IOrderTypeVM top(OrdersModel model, IObservable<SecurityMD> security_md_source) => new TopOrderVM(model, security_md_source);
-      public static IOrderTypeVM cover(OrdersModel model, IObservable<SecurityMD> security_md_source) => new CoverOrderVM(model, security_md_source);
-      public static IOrderTypeVM trigger(OrdersModel model, IObservable<SecurityMD> security_md_source) => new TriggerOrderVM(model, security_md_source);
-      public static IOrderTypeVM iceberg(OrdersModel model, IObservable<SecurityMD> security_md_source) => new IcebergOrderVM(model, security_md_source);
-      public static IOrderTypeVM spreader(OrdersModel model, IObservable<SecurityImmutable> security_source) => new SpreaderOrderVM(model, security_source);
-      public static IOrderTypeVM dynamic(OrdersModel model, IObservable<SecurityMD> security_md_source, string type) => new DynamicOrderVM(model, security_md_source, type);
+      public static IOrderTypeVM stop(OrdersModel model, string id, string display_name) => new StopOrderVM(model, id, display_name);
+      public static IOrderTypeVM stop_limit(OrdersModel model, IObservable<SecurityMD> security_md_source, string id, string display_name) => new StopLimitOrderVM(model, security_md_source, id, display_name);
+      public static IOrderTypeVM time_box(OrdersModel model, IObservable<SecurityMD> security_md_source, string id, string display_name) => new TimeBoxOrderVM(model, security_md_source, id, display_name);
+      public static IOrderTypeVM tick(OrdersModel model, IObservable<SecurityMD> security_md_source, string id, string display_name) => new TickOrderVM(model, security_md_source, id, display_name);
+      public static IOrderTypeVM lean(OrdersModel model, IObservable<SecurityMD> security_md_source, string id, string display_name) => new LeanOrderVM(model, security_md_source, id, display_name);
+      public static IOrderTypeVM join(OrdersModel model, IObservable<SecurityMD> security_md_source, string id, string display_name) => new JoinOrderVM(model, security_md_source, id, display_name);
+      public static IOrderTypeVM top(OrdersModel model, IObservable<SecurityMD> security_md_source, string id, string display_name) => new TopOrderVM(model, security_md_source, id, display_name);
+      public static IOrderTypeVM cover(OrdersModel model, IObservable<SecurityMD> security_md_source, string id, string display_name) => new CoverOrderVM(model, security_md_source, id, display_name);
+      public static IOrderTypeVM trigger(OrdersModel model, IObservable<SecurityMD> security_md_source, string id, string display_name) => new TriggerOrderVM(model, security_md_source, id, display_name);
+      public static IOrderTypeVM iceberg(OrdersModel model, IObservable<SecurityMD> security_md_source, string id, string display_name) => new IcebergOrderVM(model, security_md_source, id, display_name);
+      public static IOrderTypeVM spreader(OrdersModel model, IObservable<SecurityImmutable> security_source, string id, string display_name) => new SpreaderOrderVM(model, security_source, id, display_name);
+      public static IOrderTypeVM dynamic(OrdersModel model, IObservable<SecurityMD> security_md_source, string dynamic_type, string id, string display_name) => new DynamicOrderVM(model, security_md_source, dynamic_type, id, display_name);

-      public static IOrderTypeVM create(CustomOneofCase order_type, OrdersModel model, 
+      public static IOrderTypeVM create(CustomOneofCase order_type, string id, string display_name, OrdersModel model, 
                                        IObservable<SecurityMD> security_md_source, string dynamic_type = null ) {
         switch (order_type) {
            case CustomOneofCase.Market: return market(model);
            case CustomOneofCase.Limit: return limit(model);
-            case CustomOneofCase.Stop: return stop(model);
-            case CustomOneofCase.StopLimit: return stop_limit(model, security_md_source);
-            case CustomOneofCase.TimeBox: return time_box(model, security_md_source);
-            case CustomOneofCase.Tick: return tick(model, security_md_source);
-            case CustomOneofCase.Lean: return lean(model, security_md_source);
-            case CustomOneofCase.Join: return join(model, security_md_source);
-            case CustomOneofCase.Top: return top(model, security_md_source);
-            case CustomOneofCase.Cover: return cover(model, security_md_source);
-            case CustomOneofCase.Trigger: return trigger(model, security_md_source);
-            case CustomOneofCase.Iceberg: return iceberg(model, security_md_source);
-            case CustomOneofCase.Spreader: return spreader(model, security_md_source.Select(smd => smd.security));
-            case CustomOneofCase.Dynamic: return dynamic(model, security_md_source, dynamic_type);
+            case CustomOneofCase.Stop: return stop(model, id, display_name);
+            case CustomOneofCase.StopLimit: return stop_limit(model, security_md_source, id, display_name);
+            case CustomOneofCase.TimeBox: return time_box(model, security_md_source, id, display_name);
+            case CustomOneofCase.Tick: return tick(model, security_md_source, id, display_name);
+            case CustomOneofCase.Lean: return lean(model, security_md_source, id, display_name);
+            case CustomOneofCase.Join: return join(model, security_md_source, id, display_name);
+            case CustomOneofCase.Top: return top(model, security_md_source, id, display_name);
+            case CustomOneofCase.Cover: return cover(model, security_md_source, id, display_name);
+            case CustomOneofCase.Trigger: return trigger(model, security_md_source, id, display_name);
+            case CustomOneofCase.Iceberg: return iceberg(model, security_md_source, id, display_name);
+            case CustomOneofCase.Spreader: return spreader(model, security_md_source.Select(smd => smd.security), id, display_name);
+            case CustomOneofCase.Dynamic: return dynamic(model, security_md_source, dynamic_type, id, display_name);
            default: throw new NotImplementedException();
         }
      }
@@ -51,12 +51,17 @@ namespace mbts.spark {
         protected readonly OrdersModel model;
         protected OrderFactory factory => model.factory;

-         protected OrderTypeVMBase(OrdersModel model) => this.model = model;
+         protected OrderTypeVMBase(OrdersModel model, string id, string display_name) {
+            this.model = model;
+            this.id = id;
+            this.display_name = display_name;
+         }

         public abstract CustomOneofCase order_type { get; }
         public abstract string type_name { get; }
         public bool is_bts_type => display_name.StartsWith("BTS");
-         public string display_name => OrderUtils.order_type_display_name(order_type);
+         public string id { get; }
+         public string display_name { get; }
         public OrderMetadata meta => factory.get_metadata(order_type);
         public virtual bool has_editable_properties => !meta.NoProps;
         public virtual bool editable_properties_open { get; set; }
@@ -76,7 +81,7 @@ namespace mbts.spark {
      }

      private abstract class OrderTypeVMBase<T> : OrderTypeVMBase where T : Google.Protobuf.IMessage, new() {
-         protected OrderTypeVMBase(OrdersModel model) : base(model) { }
+         protected OrderTypeVMBase(OrdersModel model, string id, string display_name) : base(model, id, display_name) { }

         public override CustomOneofCase order_type =>
            OrderDataHelper.get_order_type(new T());
@@ -13,20 +13,20 @@ namespace mbts.spark {
         readonly StrategyEditorWrapper _strategy_editor_wrapper;
         IDisposable _dispose;

-         public SpreaderOrderVM(OrdersModel model, IObservable<SecurityImmutable> security_source)
+         public SpreaderOrderVM(OrdersModel model, IObservable<SecurityImmutable> security_source, string id, string display_name)
            : this(model, security_source, security_source.SelectMany(s => model.spreader.security_strategy(s.Id)
            .Select(strategy => {
               var so = model.factory.spreader_order();
               so.Security = s.CloneToMutable();
               so.ExecutionStrategy = strategy.CloneToMutable();
               return new InlineUserProperty<SpreaderOrderDefinitionImmutable>(so, true);
-            }))) { }
+            })), id, display_name) { }

         public SpreaderOrderVM(
            OrdersModel model,
            IObservable<SecurityImmutable> security_source,
-            IObservable<InlineUserProperty<SpreaderOrderDefinitionImmutable>> order_template_source)
-            : base(model) {
+            IObservable<InlineUserProperty<SpreaderOrderDefinitionImmutable>> order_template_source, string id, string display_name)
+            : base(model, id, display_name) {
            _template = backing(nameof(template), new SpreaderOrderDefinitionImmutable?());
            _strategy_editor_wrapper = new StrategyEditorWrapper(this);
            _dispose = Disposable.Create(
@@ -29,10 +29,11 @@ namespace mbts.spark {
         InlineStopLimitOrderProperties _inline_props;
         IDisposable _dispose;

-         internal StopLimitOrderVM(OrdersModel model, IObservable<SecurityMD> security_md_source)
-            : this(model, security_md_source.Select(smd => smd.security.spec_or_default()), InlineStopLimitOrderProperties.subscribe(security_md_source)) { }
+         internal StopLimitOrderVM(OrdersModel model, IObservable<SecurityMD> security_md_source, string id, string display_name)
+            : this(model, security_md_source.Select(smd => smd.security.spec_or_default()), InlineStopLimitOrderProperties.subscribe(security_md_source), id, display_name) { }

-         internal StopLimitOrderVM(OrdersModel model, IObservable<ContractSpecificationImmutable> spec_source, IObservable<InlineStopLimitOrderProperties> inline_properties) : base(model) {
+         internal StopLimitOrderVM(OrdersModel model, IObservable<ContractSpecificationImmutable> spec_source, IObservable<InlineStopLimitOrderProperties> inline_properties, string id, string display_name)
+            : base(model, id, display_name) {
            _stop_price = new UserProperty<double>(backing(nameof(stop_price), double.NaN));
            _dispose = Disposable.Create(
               spec_source.OnDispatcher().Subscribe(s => {
@@ -6,8 +6,7 @@ namespace mbts.spark {
      private class StopOrderVM : OrderTypeVMBase<StopOrderDefinition> {
         double _stop_price = 0;

-         internal StopOrderVM(OrdersModel model) : base(model) { }
-
+         internal StopOrderVM(OrdersModel model, string id, string display_name) : base(model, id, display_name) { }

         public double stop_price {
            get => _stop_price;
@@ -17,11 +17,11 @@ namespace mbts.spark
   {
      class InlineTickOrderProperties 
      {
-         public InlineTickOrderProperties (CustomOneofCase selected_child_order_type, IReadOnlyCollection<CustomOneofCase> child_order_types) 
+         public InlineTickOrderProperties (OrderTemplateHeader selected_child_order_type, IReadOnlyCollection<OrderTemplateHeader> child_order_types) 
         {
            ExceptionAssert.InvalidOperation.That(child_order_types.Contains(selected_child_order_type), $"Child order type {selected_child_order_type} is not in child_order_types");
-            this.selected_child_order_type = new InlineUserProperty<CustomOneofCase>(selected_child_order_type, true);
-            this.child_order_types = new InlineUserProperty<IReadOnlyCollection<CustomOneofCase>>(child_order_types, true);
+            this.selected_child_order_type = new InlineUserProperty<OrderTemplateHeader>(selected_child_order_type, true);
+            this.child_order_types = new InlineUserProperty<IReadOnlyCollection<OrderTemplateHeader>>(child_order_types, true);
            tick_offset_on_deploy = new InlineUserProperty<uint>(0, false);
            cross_threshold = new InlineUserProperty<bts.spark.QuantityMeasure>(
                              new bts.spark.QuantityMeasure() { Ratio = 1.0,  Absolute = 1}, false);
@@ -29,8 +29,8 @@ namespace mbts.spark
            max_chase_ticks = new InlineUserProperty<uint>(10, false);
            detach_on_toward = new InlineUserProperty<bool>(true, false);
         }
-         public readonly InlineUserProperty<CustomOneofCase> selected_child_order_type;
-         public readonly InlineUserProperty<IReadOnlyCollection<CustomOneofCase>> child_order_types;
+         public readonly InlineUserProperty<OrderTemplateHeader> selected_child_order_type;
+         public readonly InlineUserProperty<IReadOnlyCollection<OrderTemplateHeader>> child_order_types;
         
         public readonly InlineUserProperty<uint> tick_offset_on_deploy;
         public readonly InlineUserProperty<bts.spark.QuantityMeasure> cross_threshold;
@@ -43,8 +43,8 @@ namespace mbts.spark
      {
         readonly IObservable<SecurityMD> _security_md_source;
         SecurityImmutable? _security;
-         ObservableCollection<CustomOneofCase> _order_types = new ObservableCollection<CustomOneofCase>();
-         ObservableAutoWrapper<IOrderTypeVM, CustomOneofCase> _child_order_choices;
+         ObservableCollection<OrderTemplateHeader> _order_types = new ObservableCollection<OrderTemplateHeader>();
+         ObservableAutoWrapper<IOrderTypeVM, OrderTemplateHeader> _child_order_choices;
         InlineTickOrderProperties _inline_props;
         IOrderTypeVM _child_order;
         IDisposable _dispose, _child_order_errors_sub;
@@ -55,12 +55,12 @@ namespace mbts.spark
         public uint max_chase_ticks { get; set; } = 10;
         public bool detach_on_toward { get; set; } = true;         

-         public TickOrderVM(OrdersModel model, IObservable<SecurityMD> security_md_source)
+         public TickOrderVM(OrdersModel model, IObservable<SecurityMD> security_md_source, string id, string display_name)
            : this(model, security_md_source, security_md_source.Select(smd =>
-            new InlineTickOrderProperties(model.factory.default_order_type(smd.security), model.factory.default_order_types(smd.security).ToList()))) { }
+            new InlineTickOrderProperties(new OrderTemplateHeader(model.factory.default_order_type(smd.security)), model.factory.default_order_types(smd.security).Select(t => new OrderTemplateHeader(t)).ToList())), id, display_name) { }

         public TickOrderVM(OrdersModel model, IObservable<SecurityMD> security_md_source,
-                            IObservable<InlineTickOrderProperties> inline_properties) : base(model) 
+                            IObservable<InlineTickOrderProperties> inline_properties, string id, string display_name) : base(model, id, display_name) 
         {
            _security_md_source = security_md_source;
            _dispose = Disposable.Create(
@@ -74,7 +74,7 @@ namespace mbts.spark
                  }
                  if (_child_order_choices != null && (_child_order == null || p.selected_child_order_type.force_override)) 
                  {
-                     _select_child_order(p.selected_child_order_type.value);
+                     _select_child_order(p.selected_child_order_type.value.key.type);
                  }                  
                  if (p.tick_offset_on_deploy.force_override) 
                  {
@@ -131,7 +131,7 @@ namespace mbts.spark
            get 
            {
               if (_child_order_choices == null) 
-                  _child_order_choices = new ObservableAutoWrapper<IOrderTypeVM, CustomOneofCase>(_order_types, ot => create(ot, model, _security_md_source));
+                  _child_order_choices = new ObservableAutoWrapper<IOrderTypeVM, OrderTemplateHeader>(_order_types, ot => create(ot.key.type, ot.key.name, ot.display_name, model, _security_md_source));
               return _child_order_choices;
            }
         }
@@ -177,7 +177,7 @@ namespace mbts.spark
         void _select_child_order() 
         {
            CustomOneofCase ot = _inline_props != null && _inline_props.selected_child_order_type.has_value ?
-               _inline_props.selected_child_order_type.value :
+               _inline_props.selected_child_order_type.value.key.type :
               model.factory.default_order_type(_security.Value, true);
            _select_child_order(ot);
         }
@@ -14,15 +14,15 @@ using static bts.api.orderman.CustomOrderDefinition;
 namespace mbts.spark {
   static partial class OrderTypeVMFactory {
      class InlineTimeBoxOrderProperties {
-         public InlineTimeBoxOrderProperties(CustomOneofCase selected_child_order_type, IReadOnlyCollection<CustomOneofCase> child_order_types) {
+         public InlineTimeBoxOrderProperties(OrderTemplateHeader selected_child_order_type, IReadOnlyCollection<OrderTemplateHeader> child_order_types) {
            ExceptionAssert.InvalidOperation.That(child_order_types.Contains(selected_child_order_type), $"Child order type {selected_child_order_type} is not in child_order_types");
-            this.selected_child_order_type = new InlineUserProperty<CustomOneofCase>(selected_child_order_type, true);
-            this.child_order_types = new InlineUserProperty<IReadOnlyCollection<CustomOneofCase>>(child_order_types, true);
+            this.selected_child_order_type = new InlineUserProperty<OrderTemplateHeader>(selected_child_order_type, true);
+            this.child_order_types = new InlineUserProperty<IReadOnlyCollection<OrderTemplateHeader>>(child_order_types, true);
            start = new InlineUserProperty<DateTime>(DateTime.Now, true);
            stop = new InlineUserProperty<DateTime>(DateTime.Now.AddMinutes(5), true);
         }
-         public readonly InlineUserProperty<CustomOneofCase> selected_child_order_type;
-         public readonly InlineUserProperty<IReadOnlyCollection<CustomOneofCase>> child_order_types;
+         public readonly InlineUserProperty<OrderTemplateHeader> selected_child_order_type;
+         public readonly InlineUserProperty<IReadOnlyCollection<OrderTemplateHeader>> child_order_types;
         public readonly InlineUserProperty<DateTime> start, stop;
      }

@@ -30,8 +30,8 @@ namespace mbts.spark {
         const double _start_immediately_delay_ms = 500;
         readonly IObservable<SecurityMD> _security_md_source;
         SecurityImmutable? _security;
-         ObservableCollection<CustomOneofCase> _order_types = new ObservableCollection<CustomOneofCase>();
-         ObservableAutoWrapper<IOrderTypeVM, CustomOneofCase> _child_order_choices;
+         ObservableCollection<OrderTemplateHeader> _order_types = new ObservableCollection<OrderTemplateHeader>();
+         ObservableAutoWrapper<IOrderTypeVM, OrderTemplateHeader> _child_order_choices;
         InlineTimeBoxOrderProperties _inline_props;
         TimeTextTuple _absolute_start = TimeTextTuple.FromDateTime(DateTime.Now.AddMinutes(5)), _absolute_stop = TimeTextTuple.FromDateTime(DateTime.Now.AddMinutes(10));
         TimeSpan? _relative_start = TimeSpan.FromMinutes(5), _relative_stop = TimeSpan.FromMinutes(5);
@@ -40,14 +40,14 @@ namespace mbts.spark {
         IOrderTypeVM _child_order;
         IDisposable _dispose, _child_order_errors_sub;

-         public TimeBoxOrderVM(OrdersModel model, IObservable<SecurityMD> security_md_source)
+         public TimeBoxOrderVM(OrdersModel model, IObservable<SecurityMD> security_md_source, string id, string display_name)
            : this(model, security_md_source, security_md_source.Select(smd =>
-            new InlineTimeBoxOrderProperties(model.factory.default_order_type(smd.security), model.factory.default_order_types(smd.security).ToList()))) { }
+            new InlineTimeBoxOrderProperties(new OrderTemplateHeader(model.factory.default_order_type(smd.security)), model.factory.default_order_types(smd.security).Select(t => new OrderTemplateHeader(t)).ToList())), id, display_name) { }

         public TimeBoxOrderVM(OrdersModel model,
            IObservable<SecurityMD> security_md_source,
-            IObservable<InlineTimeBoxOrderProperties> inline_properties)
-            : base(model) {
+            IObservable<InlineTimeBoxOrderProperties> inline_properties, string id, string display_name)
+            : base(model, id, display_name) {
            _security_md_source = security_md_source;
            _dispose = Disposable.Create(
               security_md_source.OnDispatcher()
@@ -58,7 +58,7 @@ namespace mbts.spark {
                     _order_types.SetItems(p.child_order_types.value);
                  }
                  if (_child_order_choices != null && (_child_order == null || p.selected_child_order_type.force_override)) {
-                     _select_child_order(p.selected_child_order_type.value);
+                     _select_child_order(p.selected_child_order_type.value.key.type);
                  }
                  if (p.start.force_override) {
                     absolute_start = TimeTextTuple.FromDateTime(p.start.value);
@@ -94,7 +94,7 @@ namespace mbts.spark {
         public ICollection<IOrderTypeVM> child_order_types {
            get {
               if (_child_order_choices == null) {
-                  _child_order_choices = new ObservableAutoWrapper<IOrderTypeVM, CustomOneofCase>(_order_types, ot => create(ot, model, _security_md_source));
+                  _child_order_choices = new ObservableAutoWrapper<IOrderTypeVM, OrderTemplateHeader>(_order_types, ot => create(ot.key.type, ot.key.name, ot.display_name, model, _security_md_source));
               }
               return _child_order_choices;
            }
@@ -173,7 +173,7 @@ namespace mbts.spark {

         void _select_child_order() {
            CustomOneofCase ot = _inline_props != null && _inline_props.selected_child_order_type.has_value ?
-               _inline_props.selected_child_order_type.value :
+               _inline_props.selected_child_order_type.value.key.type :
               model.factory.default_order_type(_security.Value, true);
            _select_child_order(ot);
         }
@@ -17,17 +17,17 @@ namespace mbts.spark
   {
      class InlineTopOrderProperties
      {
-         public InlineTopOrderProperties(CustomOneofCase selected_child_order_type, IReadOnlyCollection<CustomOneofCase> child_order_types)
+         public InlineTopOrderProperties(OrderTemplateHeader selected_child_order_type, IReadOnlyCollection<OrderTemplateHeader> child_order_types)
         {
            ExceptionAssert.InvalidOperation.That(child_order_types.Contains(selected_child_order_type), $"Child order type {selected_child_order_type} is not in child_order_types");
-            this.selected_child_order_type = new InlineUserProperty<CustomOneofCase>(selected_child_order_type, true);
-            this.child_order_types = new InlineUserProperty<IReadOnlyCollection<CustomOneofCase>>(child_order_types, true);
+            this.selected_child_order_type = new InlineUserProperty<OrderTemplateHeader>(selected_child_order_type, true);
+            this.child_order_types = new InlineUserProperty<IReadOnlyCollection<OrderTemplateHeader>>(child_order_types, true);

            var hedgetype = CustomOneofCase.Lean;
-            if(!child_order_types.Contains(hedgetype))
+            if(!child_order_types.Any(ct => ct.key.type == hedgetype))
               hedgetype = CustomOneofCase.Limit;
-            this.selected_hedge_order_type = new InlineUserProperty<CustomOneofCase>(hedgetype, true);
-            this.hedge_order_types = new InlineUserProperty<IReadOnlyCollection<CustomOneofCase>>(child_order_types, true);
+            this.selected_hedge_order_type = new InlineUserProperty<OrderTemplateHeader>(new OrderTemplateHeader(hedgetype), true);
+            this.hedge_order_types = new InlineUserProperty<IReadOnlyCollection<OrderTemplateHeader>>(child_order_types, true);

            watch_level_tick_offset = new InlineUserProperty<uint>(0, false);
            top_threshold = new InlineUserProperty<bts.spark.QuantityMeasure>(
@@ -35,10 +35,10 @@ namespace mbts.spark
            enable_hedge = new InlineUserProperty<bool>(false, false);
            hedge_ticks = new InlineUserProperty<int>(1, false);
         }
-         public readonly InlineUserProperty<CustomOneofCase> selected_child_order_type;
-         public readonly InlineUserProperty<IReadOnlyCollection<CustomOneofCase>> child_order_types;
-         public readonly InlineUserProperty<CustomOneofCase> selected_hedge_order_type;
-         public readonly InlineUserProperty<IReadOnlyCollection<CustomOneofCase>> hedge_order_types;
+         public readonly InlineUserProperty<OrderTemplateHeader> selected_child_order_type;
+         public readonly InlineUserProperty<IReadOnlyCollection<OrderTemplateHeader>> child_order_types;
+         public readonly InlineUserProperty<OrderTemplateHeader> selected_hedge_order_type;
+         public readonly InlineUserProperty<IReadOnlyCollection<OrderTemplateHeader>> hedge_order_types;


         public readonly InlineUserProperty<uint> watch_level_tick_offset;
@@ -53,13 +53,13 @@ namespace mbts.spark
      {
         readonly IObservable<SecurityMD> _security_md_source;
         SecurityImmutable? _security;
-         ObservableCollection<CustomOneofCase> _order_types = new ObservableCollection<CustomOneofCase>();
-         ObservableAutoWrapper<IOrderTypeVM, CustomOneofCase> _child_order_choices;
+         ObservableCollection<OrderTemplateHeader> _order_types = new ObservableCollection<OrderTemplateHeader>();
+         ObservableAutoWrapper<IOrderTypeVM, OrderTemplateHeader> _child_order_choices;
         InlineTopOrderProperties _inline_props;
         IOrderTypeVM _child_order;
         IDisposable _dispose, _child_order_errors_sub;

-         ObservableAutoWrapper<IOrderTypeVM, CustomOneofCase> _hedge_order_choices;
+         ObservableAutoWrapper<IOrderTypeVM, OrderTemplateHeader> _hedge_order_choices;
         IOrderTypeVM _hedge_order;
         IDisposable _hedge_order_errors_sub;

@@ -77,13 +77,13 @@ namespace mbts.spark
         }
         public int hedge_ticks { get; set; } = 1;

-         public TopOrderVM(OrdersModel model, IObservable<SecurityMD> security_md_source)
+         public TopOrderVM(OrdersModel model, IObservable<SecurityMD> security_md_source, string id, string display_name)
            : this(model, security_md_source, security_md_source.Select(smd =>
-            new InlineTopOrderProperties(model.factory.default_order_type(smd.security), model.factory.default_order_types(smd.security).ToList())))
+            new InlineTopOrderProperties(new OrderTemplateHeader(model.factory.default_order_type(smd.security)), model.factory.default_order_types(smd.security).Select(t => new OrderTemplateHeader(t)).ToList())), id, display_name)
         { }

         public TopOrderVM(OrdersModel model, IObservable<SecurityMD> security_md_source,
-                            IObservable<InlineTopOrderProperties> inline_properties) : base(model)
+                            IObservable<InlineTopOrderProperties> inline_properties, string id, string display_name) : base(model, id, display_name)
         {
            _security_md_source = security_md_source;
            _dispose = Disposable.Create(
@@ -98,11 +98,11 @@ namespace mbts.spark
                  }
                  if (_child_order_choices != null && (_child_order == null || p.selected_child_order_type.force_override))
                  {
-                     _select_child_order(p.selected_child_order_type.value);
+                     _select_child_order(p.selected_child_order_type.value.key.type);
                  }
                  if (_hedge_order_choices != null && (_hedge_order == null || p.selected_hedge_order_type.force_override))
                  {
-                     _select_hedge_order(p.selected_hedge_order_type.value);
+                     _select_hedge_order(p.selected_hedge_order_type.value.key.type);
                  }
                  if (p.watch_level_tick_offset.force_override)
                  {
@@ -157,7 +157,7 @@ namespace mbts.spark
            get
            {
               if (_child_order_choices == null)
-                  _child_order_choices = new ObservableAutoWrapper<IOrderTypeVM, CustomOneofCase>(_order_types, ot => create(ot, model, _security_md_source));
+                  _child_order_choices = new ObservableAutoWrapper<IOrderTypeVM, OrderTemplateHeader>(_order_types, ot => create(ot.key.type, ot.key.name, ot.display_name, model, _security_md_source));
               return _child_order_choices;
            }
         }
@@ -167,7 +167,7 @@ namespace mbts.spark
            get
            {
               if (_hedge_order_choices == null)
-                  _hedge_order_choices = new ObservableAutoWrapper<IOrderTypeVM, CustomOneofCase>(_order_types, ot => create(ot, model, _security_md_source));
+                  _hedge_order_choices = new ObservableAutoWrapper<IOrderTypeVM, OrderTemplateHeader>(_order_types, ot => create(ot.key.type, ot.key.name, ot.display_name, model, _security_md_source));
               return _hedge_order_choices;
            }
         }
@@ -241,7 +241,7 @@ namespace mbts.spark
         void _select_child_order()
         {
            CustomOneofCase ot = _inline_props != null && _inline_props.selected_child_order_type.has_value ?
-               _inline_props.selected_child_order_type.value :
+               _inline_props.selected_child_order_type.value.key.type :
               model.factory.default_order_type(_security.Value, true);
            _select_child_order(ot);
         }
@@ -257,7 +257,7 @@ namespace mbts.spark
         void _select_hedge_order()
         {
            CustomOneofCase ot = _inline_props != null && _inline_props.selected_hedge_order_type.has_value ?
-               _inline_props.selected_hedge_order_type.value :
+               _inline_props.selected_hedge_order_type.value.key.type :
               model.factory.default_order_type(_security.Value, true);
            _select_hedge_order(ot);
         }
@@ -14,8 +14,8 @@ using static bts.api.orderman.CustomOrderDefinition;
 namespace mbts.spark {
   static partial class OrderTypeVMFactory {
      class InlineTriggerOrderProperties {
-         public readonly InlineUserProperty<CustomOneofCase> selected_child_order_type;
-         public readonly InlineUserProperty<IReadOnlyCollection<CustomOneofCase>> child_order_types;
+         public readonly InlineUserProperty<OrderTemplateHeader> selected_child_order_type;
+         public readonly InlineUserProperty<IReadOnlyCollection<OrderTemplateHeader>> child_order_types;
         public readonly InlineUserProperty<TriggerPriceType> trigger_price_type;
         public readonly InlineUserProperty<TriggerPayupPrice.Types.TriggerPayupPriceType> payup_price_type;
         public readonly InlineUserProperty<double> fixed_price;
@@ -23,10 +23,10 @@ namespace mbts.spark {
         public readonly InlineUserProperty<bool> use_fixed_price, is_priceout_checked, is_timeout_checked;
         public readonly InlineUserProperty<int> timeout_secs;

-         public InlineTriggerOrderProperties(CustomOneofCase selected_child_order_type, IReadOnlyCollection<CustomOneofCase> child_order_types) {
+         public InlineTriggerOrderProperties(OrderTemplateHeader selected_child_order_type, IReadOnlyCollection<OrderTemplateHeader> child_order_types) {
            ExceptionAssert.InvalidOperation.That(child_order_types.Contains(selected_child_order_type), $"Child order type {selected_child_order_type} is not in child_order_types");
-            this.selected_child_order_type = new InlineUserProperty<CustomOneofCase>(selected_child_order_type, true);
-            this.child_order_types = new InlineUserProperty<IReadOnlyCollection<CustomOneofCase>>(child_order_types, true);
+            this.selected_child_order_type = new InlineUserProperty<OrderTemplateHeader>(selected_child_order_type, true);
+            this.child_order_types = new InlineUserProperty<IReadOnlyCollection<OrderTemplateHeader>>(child_order_types, true);
            trigger_price_type = new InlineUserProperty<TriggerPriceType>(TriggerPriceType.Bid, false);
            payup_price_type = new InlineUserProperty<TriggerPayupPrice.Types.TriggerPayupPriceType>();
            use_fixed_price = new InlineUserProperty<bool>(false);
@@ -47,19 +47,20 @@ namespace mbts.spark {
         readonly UserProperty<bool> _use_fixed_price, _is_timeout_checked, _is_priceout_checked;
         SecurityMD? _security_md;
         SecurityImmutable? _security => _security_md.security();
-         ObservableCollection<CustomOneofCase> _order_types = new ObservableCollection<CustomOneofCase>();
-         ObservableAutoWrapper<IOrderTypeVM, CustomOneofCase> _child_order_choices;
+         ObservableCollection<OrderTemplateHeader> _order_types = new ObservableCollection<OrderTemplateHeader>();
+         ObservableAutoWrapper<IOrderTypeVM, OrderTemplateHeader> _child_order_choices;
         InlineTriggerOrderProperties _inline_props;
         IOrderTypeVM _child_order;
         IDisposable _dispose, _child_order_errors_sub;
         ulong _bbo_ref = 0, _last_trade_ref = 0;
         double _best_bid = double.NaN, _best_ask = double.NaN, _last_trade_price = double.NaN;

-         public TriggerOrderVM(OrdersModel model, IObservable<SecurityMD> security_md_source)
+         public TriggerOrderVM(OrdersModel model, IObservable<SecurityMD> security_md_source, string id, string display_name)
            : this(model, security_md_source, security_md_source.Select(smd =>
-              new InlineTriggerOrderProperties(model.factory.default_order_type(smd.security), model.factory.default_order_types(smd.security).ToList()))) { }
+              new InlineTriggerOrderProperties(new OrderTemplateHeader(model.factory.default_order_type(smd.security)), model.factory.default_order_types(smd.security).Select(t => new OrderTemplateHeader(t)).ToList())), id, display_name) { }

-         public TriggerOrderVM(OrdersModel model, IObservable<SecurityMD> security_md_source, IObservable<InlineTriggerOrderProperties> inline_properties) : base(model) {
+         public TriggerOrderVM(OrdersModel model, IObservable<SecurityMD> security_md_source, IObservable<InlineTriggerOrderProperties> inline_properties, string id, string display_name)
+            : base(model, id, display_name) {
            _trigger_price_type = create_user_prop(nameof(trigger_price_type), TriggerPriceType.Bid);
            _use_fixed_price = create_user_prop(nameof(use_fixed_price), true);
            _fixed_price = create_user_prop(nameof(fixed_price), double.NaN);
@@ -88,7 +89,7 @@ namespace mbts.spark {
                     _order_types.SetItems(p.child_order_types.value);
                  }
                  if (_child_order_choices != null && (_child_order == null || p.selected_child_order_type.force_override)) {
-                     _select_child_order(p.selected_child_order_type.value);
+                     _select_child_order(p.selected_child_order_type.value.key.type);
                  }
                  // trigger price
                  _trigger_price_type.on_inline_prop(p.trigger_price_type);
@@ -135,7 +136,7 @@ namespace mbts.spark {
         public ICollection<IOrderTypeVM> child_order_types {
            get {
               if (_child_order_choices == null)
-                  _child_order_choices = new ObservableAutoWrapper<IOrderTypeVM, CustomOneofCase>(_order_types, ot => create(ot, model, _security_md_source));
+                  _child_order_choices = new ObservableAutoWrapper<IOrderTypeVM, OrderTemplateHeader>(_order_types, ot => create(ot.key.type, ot.key.name, ot.display_name, model, _security_md_source));
               return _child_order_choices;
            }
         }
@@ -216,7 +217,7 @@ namespace mbts.spark {

         void _select_child_order() {
            CustomOneofCase ot = _inline_props != null && _inline_props.selected_child_order_type.has_value ?
-               _inline_props.selected_child_order_type.value :
+               _inline_props.selected_child_order_type.value.key.type :
               model.factory.default_order_type(_security.Value, true);
            _select_child_order(ot);
         }
@@ -75,6 +75,11 @@
      <SubType>Code</SubType>
    </Compile>
  </ItemGroup>
+  <ItemGroup>
+    <None Update="view\Controls\DIYGrid\Settings\SimpleGridSettingsDialog.xaml">
+      <Generator>MSBuild:Compile</Generator>
+    </None>
+  </ItemGroup>
  <Target Name="diagnostic" AfterTargets="PreBuildEvent">
  </Target>
  <Target Name="copy_defaults" AfterTargets="PostBuildEvent">
@@ -113,10 +113,10 @@ namespace bts.spark

      // TODO: remove this method, eventually want all windows to use window_settings_command()
      public static SparkCommand change_securities_command(Func<(PartialCommand<SecurityCriteria>, SecurityCriteria)> get_param) =>
-         SparkCommand.create("Settings", Icons.Admin, SparkTags.ShowAndEditPickMultiple, get_param);
+         SparkCommand.create("Securities", Icons.HandPointingOverDocument, SparkTags.ShowAndEditPickMultiple, get_param);

      public static PartialCommand<SecurityCriteria> change_securities_callback(string window_name) =>
-         SparkCommand.create(window_name, Icons.Admin, new SparkTags.SparkTag<SecurityCriteria>($"Change {window_name} securities callback"));
+         SparkCommand.create(window_name, Icons.HandPointingOverDocument, new SparkTags.SparkTag<SecurityCriteria>($"Change {window_name} securities callback"));

      public static SparkCommand window_settings_command(IDialogCommand launch_settings_editor) =>
         new SparkCommandWrapper("Settings", Icons.Admin, launch_settings_editor);
@@ -5,6 +5,9 @@ namespace mbts.utils {
      public static class Argument {
         public static ArgumentException must_be(string description, string name) =>
            new ArgumentException($"Must be {description}.", name);
+
+         public static ArgumentException unexpected_case<T>(T value, string name) =>
+            new ArgumentException($"Unexpected {typeof(T)} '{value}.'", name);
      }
   }
 }
@@ -608,6 +608,12 @@ namespace mbts.ui {
         public static BTSColor positive_diff { get { return Color.FromRgb(0, 90, 50); } }
      }

+      public static class LadderSpecial {
+         public static BTSColor passive_volume_bar { get; } = Colors.SlateBlue;
+         public static BTSColor total_volume_bar { get; } = 0x009B69;
+         public static BTSColor default_column_background { get; } = 0xBABABA;
+      }
+
      // Style Guide Colors
      public static Color brand_lightest { get { return UI.brand_lightest; } }
      public static Brush brand_lightest_brush { get { return new SolidColorBrush(brand_lightest); } }
@@ -271,9 +271,6 @@ namespace System.Collections.Generic {
      #endregion

      #region Max
-      public static T Max<TElement, T>(this IEnumerable<TElement> enumerable, Func<TElement, T> select_value) where T : IComparable<T> =>
-         Max(enumerable, select_value, default(T));
-
      public static T Max<TElement, T>(this IEnumerable<TElement> enumerable, Func<TElement, T> select_value, T return_if_empty) where T : IComparable<T> {
         var etr = enumerable.GetEnumerator();
         if (!etr.MoveNext()) return return_if_empty;
@@ -153,40 +153,6 @@ namespace mbts
         return rv.ToDictionary(kv => kv.Key, kv => kv.Value);
      }

-      //this overloaded declaration, (as opposed to one function with comp = null) allows observable_collection.sync_with to be passed into functions as a parameterless Action
-      public static void sync_with<T>(this IList<T> dest, IEnumerable<T> src) { dest.sync_with(src, EqualityComparer<T>.Default); }
-      public static void sync_with<T>(this IList<T> dest, IEnumerable<T> src, IEqualityComparer<T> comp) {
-         Log.notnull(dest);
-         if (src == null) {
-            dest.Clear();
-            return;
-         }
-         var srcList = src as IList<T> ?? src.ToList();
-         var changes = bts.utils.Diff.diff(dest, srcList, comp).ToList();
-         // Apply the diff
-         for(int i = 0; i < changes.Count; ++i) {
-            var c = changes[i];
-            // removes
-            for (var x = 0; x < c.deletedLeft; ++x) {
-               dest.RemoveAt(c.StartLeft);
-            }
-            // inserts
-            for (var x = 0; x < c.insertedRight; ++x) {
-               dest.Insert(c.StartLeft + x, srcList[c.StartRight + x]);
-            }
-
-            // Adjust start index of remaining changes
-            for (int ii = i + 1; ii < changes.Count; ++ii) {
-               var cc = changes[ii];
-               var delta = c.insertedRight - c.deletedLeft;
-               if (cc.StartLeft >= c.StartLeft) {
-                  cc.StartLeft += delta;
-                  changes[ii] = cc;//remember: struct
-               }
-            }
-         }
-      }
-
      public static bool sync_with_setwise<T>(this ObservableCollection<T> dest, IEnumerable<T> src) { return dest.sync_with_setwise(src, EqualityComparer<T>.Default); }
      public static bool sync_with_setwise<T>(this ObservableCollection<T> dest, IEnumerable<T> src, IEqualityComparer<T> comp) {
         if (!src.is_distinct(comp)) {
@@ -103,9 +103,23 @@ namespace mbts {
         return _round_tick(tuf, val);
      }

-      public static (int n_low, int n_high) tickdiff(this RegionalTickFactors regional_tick, double x, double y) {
-         if (DoubleHelper.IsNaNOrInfinity(x)) throw new ArgumentException("Cannot be NaN or Infinity.", nameof(x));
-         if (DoubleHelper.IsNaNOrInfinity(y)) throw new ArgumentException("Cannot be NaN or Infinity.", nameof(y));
+      public static bool try_get_tickdiff(this RegionalTickFactors regional_tick, double x, double y, out int n_low, out int n_high) {
+         if (DoubleHelper.IsNaNOrInfinity(x) || DoubleHelper.IsNaNOrInfinity(y)) {
+            n_low = default;
+            n_high = default;
+            return false;
+         }
+         (n_low, n_high) = tickdiff_unchecked(regional_tick, x, y);
+         return true;
+      }
+
+      /// <summary>
+      /// Callers should be certain that <paramref name="x"/> and <paramref name="y"/> are not nan or infinity.
+      /// </summary>
+      /// <param name="regional_tick"></param>
+      /// <param name="x"></param>
+      /// <param name="y"></param>
+      internal static (int n_low, int n_high) tickdiff_unchecked(this RegionalTickFactors regional_tick, double x, double y) {
         double ltie = regional_tick.low_tick_inclusive_end;
         double raw_diff = x - y;
         if (x < ltie) {
@@ -1,5 +1,5 @@
-using bts.proto;
-using Google.Protobuf.WellKnownTypes;
+using Google.Protobuf.WellKnownTypes;
+using mbts.ui.settings;
 using ProtoBuf;
 using System;

@@ -12,7 +12,12 @@ namespace mbts.spark {
      public static UserSettings factory_defaults =>
         new UserSettings {
            _ladder = LadderSettings.Default,
-            _notification = NotificationSettings.Default
+            _notification = NotificationSettings.Default,
+            _market_view_grid = bts.shell.MarketViewWindowFactory.StartupData.DefaultGridSettings,
+            _fills_grid = bts.shell.FillsWindowFactory.StartupData.DefaultGridSettings,
+            _time_and_sales_grid = bts.shell.TimeAndSalesWindowFactory.StartupData.DefaultGridSettings,
+            _synthetic_management_grid = bts.shell.SyntheticManagementWindowFactory.StartupData.DefaultGridSettings,
+            _order_book_grid = bts.shell.OrderBookWindowFactory.OrderBookStartupData.DefaultGrid
         };

      [ProtoMember(1)]
@@ -21,19 +26,53 @@ namespace mbts.spark {
      // This way, when they are enabled, there won't be any backwards compatability issues to worry about, as no clients will have persisted them yet.
      NotificationSettings _notification;

+      [ProtoMember(5)]
+      GridSettings _market_view_grid;
+      [ProtoMember(6)]
+      GridSettings _time_and_sales_grid;
+      [ProtoMember(7)]
+      GridSettings _fills_grid;
+      [ProtoMember(8)]
+      GridSettings _synthetic_management_grid;
+      [ProtoMember(9)]
+      GridSettings _pnl_grid;
+      [ProtoMember(10)]
+      bts.shell.OrderBookWindowFactory.OrderBookGridSettings _order_book_grid;
+
      public UserSettings() { }

      public LadderSettings ladder => _ladder ?? (_ladder = LadderSettings.Default);
      public NotificationSettings notification => _notification ?? (_notification = NotificationSettings.Default);
+      public GridSettings market_view_grid => _market_view_grid ?? (_market_view_grid = bts.shell.MarketViewWindowFactory.StartupData.DefaultGridSettings);
+      public GridSettings time_and_sales_grid => _time_and_sales_grid ?? (_time_and_sales_grid = GridSettings.Default.with(bts.shell.TimeAndSalesWindowFactory.StartupData.DefaultColumns.all));
+      public GridSettings fills_grid => _fills_grid ?? (_fills_grid = bts.shell.FillsWindowFactory.StartupData.DefaultGridSettings);
+      public GridSettings synthetic_management_grid => _synthetic_management_grid ?? (_synthetic_management_grid = bts.shell.SyntheticManagementWindowFactory.StartupData.DefaultGridSettings);
+      public GridSettings pnl_grid => _pnl_grid ?? (_pnl_grid = bts.shell.PAndLWindowFactory.PAndLStartupData.DefaultGridSettings);
+      public bts.shell.OrderBookWindowFactory.OrderBookGridSettings order_book_grid => _order_book_grid ?? (_order_book_grid = bts.shell.OrderBookWindowFactory.OrderBookStartupData.Default.grid_settings_wrapper());

-      public UserSettings with(LadderSettings ladder = null, NotificationSettings notification = null) =>
+      public UserSettings with(LadderSettings ladder = null, 
+         NotificationSettings notification = null, 
+         GridSettings provided_market_view_gridsettings = null, 
+         GridSettings time_and_sales = null,
+         GridSettings provided_fills_gridsettings = null,
+         GridSettings provided_synthetic_management_gridsettings = null,
+         GridSettings provided_pnl_gridsettings = null,
+         bts.shell.OrderBookWindowFactory.OrderBookGridSettings order_book_grid = null) =>
         new UserSettings {
            _ladder = ladder ?? _ladder,
-            _notification = notification ?? _notification
+            _notification = notification ?? _notification,
+            _market_view_grid = provided_market_view_gridsettings ?? _market_view_grid,
+            _time_and_sales_grid = time_and_sales ?? _time_and_sales_grid,
+            _fills_grid = provided_fills_gridsettings ?? _fills_grid,
+            _synthetic_management_grid = provided_synthetic_management_gridsettings ?? _synthetic_management_grid,
+            _pnl_grid = provided_pnl_gridsettings ?? _pnl_grid,
+            _order_book_grid = order_book_grid ?? _order_book_grid
         };

      public static class FileExtensions {
-         public const string LADDER = "ladder";
+         public const string
+            LADDER = "ladder",
+            GRID = "grid";
      }
   }

@@ -16,7 +16,8 @@ namespace mbts.persist {
      const string NAME_SPACE = "settings", DEFAULT_KEY = "default";
      IUserPersist _persist;
      UserSettings _default_settings;
-      readonly Subject<UserSettings> _default_settings_subject = new Subject<UserSettings>();
+      readonly BehaviorSubject<UserSettings> _default_settings_subject = new BehaviorSubject<UserSettings>(UserSettings.factory_defaults);
+      readonly object _default_settings_lock = new object();

      [ImportingConstructor]
      public UserSettingsHub(IUserPersist persist) {
@@ -33,7 +34,12 @@ namespace mbts.persist {
      /// Assuming there aren't any rogue agents saving UserSettings by themselves, there should never be any discrepancies.
      public IObservable<UserSettings> subscribe_default_settings() => _default_settings_subject.AsObservable();

-      internal UserSettings current => _default_settings ?? UserSettings.factory_defaults;
+      internal UserSettings current {
+         get {
+            lock (_default_settings_lock)
+               return _default_settings ?? UserSettings.factory_defaults;
+         }
+      }

      public async Task save_default(UserSettings value) {
         _set_and_notify(value);
@@ -41,9 +47,11 @@ namespace mbts.persist {
      }

      void _set_and_notify(UserSettings value) {
-         _default_settings = value;
-         // notify observers before persisting so the changes are reflected immediately in the ui
-         _default_settings_subject.OnNext(value);
+         lock (_default_settings_lock) {
+            _default_settings = value;
+            // notify observers before persisting so the changes are reflected immediately in the ui
+            _default_settings_subject.OnNext(value);
+         }
      }
   }
 }
@@ -1,7 +1,9 @@
 using mbts.spark;
+using mbts.utils;
 using System;
 using System.Linq;
 using System.Reactive.Linq;
+using System.Reactive.Subjects;
 using System.Threading.Tasks;

 namespace mbts.persist {
@@ -11,8 +13,15 @@ namespace mbts.persist {
      event Action<T> instance_settings_changed;
      IObservable<T> subscribe_default();
      Task save_default_settings(T value);
+      IWindowSettingsManagerNonShared<T> as_non_shared();
   }

+   /// <summary>
+   /// An implementation of IWindowSettingsManager that uses a clone of the actual default settings;
+   /// provides a convenient way to avoid problems that arise from sharing a single default settings object among multiple window instances.
+   /// </summary>
+   interface IWindowSettingsManagerNonShared<T> : IWindowSettingsManager<T>, IDisposable where T : class { }
+
   class WindowSettingsManager<T> : IWindowSettingsManager<T> where T : class {
      readonly UserSettingsHub _hub;
      readonly Func<UserSettings, T> _get;
@@ -43,6 +52,42 @@ namespace mbts.persist {

      public IObservable<T> subscribe_default() =>
         _hub.subscribe_default_settings().Select(_get).DistinctUntilChanged();
+
+      public IWindowSettingsManagerNonShared<T> as_non_shared() =>
+         new NonSharedWrapper(this);
+
+      class NonSharedWrapper : IWindowSettingsManagerNonShared<T> {
+         readonly WindowSettingsManager<T> _wsm;
+         readonly BehaviorSubject<T> _default_subject;
+         IDisposable _dispose;
+
+         public NonSharedWrapper(WindowSettingsManager<T> wsm) {
+            _wsm = wsm;
+            _default_subject = new BehaviorSubject<T>(_wsm.default_settings ?? wsm._get(UserSettings.factory_defaults));
+            _dispose = wsm.subscribe_default().Subscribe(s =>
+               _default_subject.OnNext(default_settings = MiscUtils.clone_proto(s)));
+         }
+
+         public T instance_settings {
+            get => _wsm.instance_settings;
+            set => _wsm.instance_settings = value;
+         }
+         public T default_settings { get; private set; }
+         public event Action<T> instance_settings_changed {
+            add => _wsm.instance_settings_changed += value;
+            remove => _wsm.instance_settings_changed -= value;
+         }
+         public async Task save_default_settings(T value) =>
+            await _wsm.save_default_settings(value);
+
+         public IObservable<T> subscribe_default() =>
+            _default_subject.AsObservable();
+
+         public IWindowSettingsManagerNonShared<T> as_non_shared() =>
+            new NonSharedWrapper(_wsm);
+
+         public void Dispose() => Disposable.dispose(ref _dispose);
+      }
   }

   static class WindowSettingsManagerExtensions {
@@ -54,8 +99,7 @@ namespace mbts.persist {
         Observable.CombineLatest(
            Observable.FromEvent<Action<T>, T>(cb => wsm.instance_settings_changed += cb, cb => wsm.instance_settings_changed -= cb)
            .StartWith(wsm.instance_settings),
-            wsm.subscribe_default()
-            .StartWith(wsm.default_settings),
+            wsm.subscribe_default(),
            (i, d) => i ?? d
         ).Where(v => v != null)
         .DistinctUntilChanged();
@@ -1,5 +1,4 @@
 using System;
-using System.Collections;
 using System.Collections.Generic;
 using System.Collections.ObjectModel;
 using System.Linq;
@@ -14,16 +13,13 @@ namespace mbts.utils {
      public static void sync_with_never_duplicate<T>(ObservableCollection<T> dest, IEnumerable<T> src, IEqualityComparer<T> comp) {
         int i = 0;
         foreach (var val in src.empty_if_null()) {
-            int curr_index = dest.TakeWhile(dval => !comp.Equals(dval, val)).Count();
-            if (curr_index == dest.Count) {
-               dest.Add(val);
-            } else if (curr_index == i) {
+            int curr_index = dest.IndexOf(val);
+            if (curr_index == i) {
               continue;
-            } else if (curr_index < dest.Count) {
+            } else if (curr_index > 0 && curr_index < dest.Count) {
               dest.RemoveAt(curr_index);
-               dest.Insert(i, val);
            }
-            ++i;
+            dest.Insert(i++, val);
         }
      }

@@ -49,5 +45,12 @@ namespace mbts.utils {
            ++i;
         }
      }
+
+      public static TResult[] convert_array<T, TResult>(T[] source, Func<T, TResult> selector) {
+         TResult[] rv = new TResult[source.Length];
+         for (int i = 0; i < rv.Length; i++)
+            rv[i] = selector(source[i]);
+         return rv;
+      }
   }
 }
@@ -1,156 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-using bts;
-using bts.api;
-
-namespace mbts.ui.utility
-{
-   class ExpirationFormatter
-   {
-      private static class DateFormatter
-      {
-         private static string[] month_codes = new string[] { "F", "G", "H", "J", "K", "M", "N", "Q", "U", "V", "X", "Z" };
-         private static string[] month_three_letters = new string[] { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
-
-         public static string format_condensed(DateTime date, bool use_month_code, bool show_year)
-         {
-            return String.Format("{0}{1}{2}", date.Day, month_codes[date.Month - 1], show_year ? (date.Year - 2000).ToString() : String.Empty);
-         }
-
-         public static string format(DateTime date, bool use_month_code, bool show_day) {
-            string month_text = use_month_code ? "{0}{1:00}".fmt(month_codes[date.Month - 1], date.Year - 2000) : "{0} {1:00}".fmt(month_three_letters[date.Month - 1], date.Year - 2000);
-            return show_day ? "{0} {1}".fmt(date.Day, month_text) : month_text;
-         }
-
-         public static string format_standard(DateTime date) { return "{0} {1} {2:00}".fmt(date.Day, month_three_letters[date.Month - 1], date.Year - 2000); }
-         public static string format_coded(DateTime date) { return "{0} {1}{2:00}".fmt(date.Day, month_codes[date.Month - 1], date.Year - 2000); }
-         public static string format_coded_hide_day(DateTime date) { return "{0}{1}".fmt(month_codes[date.Month - 1], date.Year - 2000); }
-         
-         public static DateTime parse_standard(string date_text) {
-            string[] split = date_text.Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
-            int year = 0;
-            int month = Array.IndexOf(month_three_letters, split[1]) + 1;
-            int day = 0;
-            int.TryParse(split[2], out year);
-            int.TryParse(split[0], out day);
-            return new DateTime(year + 2000, month, day);
-         }
-
-         public static DateTime parse_coded(string date_text) {
-            string[] split = date_text.Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
-            string year_text = split[1].Substring(1);
-            string month_text = split[1].Substring(0, 1);
-            string day_text = split[0];
-            int month = Array.IndexOf(month_codes, month_text) + 1;
-            int day, year;
-            int.TryParse(year_text, out year);
-            int.TryParse(day_text, out day);
-            return new DateTime(year + 2000, month, day);
-         }
-
-         public static DateTime parse_coded_hide_day(string date_text) {
-            string year_text = date_text.Substring(1);
-            string month_text = date_text.Substring(0, 1);
-            int month = Array.IndexOf(month_codes, month_text) + 1;
-            int year;
-            int.TryParse(year_text, out year);
-            return new DateTime(year + 2000, month, 0);
-         }
-      }
-
-      private static IDictionary<SecurityType, IDictionary<string, bts.config.ExpirationDisplayOffsetEntry>> _offset_map;
-
-      static ExpirationFormatter()
-      {
-         try
-         {
-            _offset_map = new Dictionary<SecurityType, IDictionary<string, bts.config.ExpirationDisplayOffsetEntry>>();
-            _offset_map[SecurityType.Option] = new Dictionary<string, bts.config.ExpirationDisplayOffsetEntry>();
-            _offset_map[SecurityType.Future] = new Dictionary<string, bts.config.ExpirationDisplayOffsetEntry>();
-
-            bts.config.ExpirationDisplayOffset offset_list = mbts.config.Configuration.get<bts.config.ExpirationDisplayOffset>();
-            foreach (bts.config.ExpirationDisplayOffsetEntry e in offset_list.entries)
-            {
-               string security_name = e.security_name;
-               string security_type_text = e.security_type;
-               SecurityType security_type = SecurityType.Unset;
-               Enum.TryParse<SecurityType>(security_type_text, true, out security_type);
-               if (security_type == SecurityType.Option || security_type == SecurityType.Future)
-                  _offset_map[security_type][security_name] = e;
-            }
-         }
-         catch (Exception ex)
-         {
-            Log.Ui.error(String.Format("Exception message = {0}", ex.Message));
-         }
-      }
-
-      private static bts.config.ExpirationDisplayOffsetEntry _get_offset_entry(SecurityType security_type, string security_name)
-      {
-         bts.config.ExpirationDisplayOffsetEntry rv = null;
-         IDictionary<string, bts.config.ExpirationDisplayOffsetEntry> this_security_type_map = null;
-         if (_offset_map.TryGetValue(security_type, out this_security_type_map))
-            if (this_security_type_map.TryGetValue(security_name, out rv))
-               return rv;
-         return rv;
-      }
-
-      public static DateTime convert_real_to_mapped(SecurityType security_type, string security_name, DateTime security_expiration)
-      {
-         bts.config.ExpirationDisplayOffsetEntry offset_entry = _get_offset_entry(security_type, security_name);
-         DateTime rv = security_expiration;
-         if (offset_entry != null)
-         {
-            if (offset_entry.addition_type == bts.config.ExpirationOffsetType.type.Month)
-               rv = security_expiration.AddMonths(offset_entry.addition_count);
-            else if (offset_entry.addition_type == bts.config.ExpirationOffsetType.type.MonthMoveToStart)
-            {
-               rv = security_expiration.AddMonths(offset_entry.addition_count);
-               rv = new DateTime(rv.Year, rv.Month, 1);
-            }
-         }
-         return rv;
-      }
-
-      public static string format_expiration_standard(SecurityType security_type, string security_name, DateTime security_expiration, bool map_expiration) {
-         return format_expiration_standard(security_type, security_name, security_expiration, map_expiration, false);
-      }
-
-      public static string format_expiration_standard(SecurityType security_type, string security_name, DateTime security_expiration, bool map_expiration, bool use_month_code) {
-         return format_expiration_standard(security_type, security_name, security_expiration, map_expiration, use_month_code, true);
-      }
-
-      public static string format_expiration_standard(SecurityType security_type, string security_name, DateTime security_expiration, bool map_expiration, bool use_month_code, bool show_day) {
-         DateTime mapped_expiration = map_expiration ? convert_real_to_mapped(security_type, security_name, security_expiration) : security_expiration;
-         return DateFormatter.format(mapped_expiration, use_month_code, show_day);
-      }
-
-      public static string format_symbol_expiration_standard (SecurityType security_type, string security_name, DateTime security_expiration, bool map_expiration) {
-         return format_symbol_expiration_standard(security_type, security_name, security_expiration, map_expiration, false, false, true);
-      }
-
-      public static string format_symbol_expiration_standard (SecurityType security_type, string security_name, DateTime security_expiration, bool map_expiration, bool show_security_type) {
-         return format_symbol_expiration_standard(security_type, security_name, security_expiration, map_expiration, show_security_type, false, true);
-      }
-
-      public static string format_symbol_expiration_standard(SecurityType security_type, string security_name, DateTime security_expiration, bool map_expiration, bool show_security_type, bool use_month_code) {
-         return format_symbol_expiration_standard(security_type, security_name, security_expiration, map_expiration, show_security_type, use_month_code, true);
-      }
-
-      public static string format_symbol_expiration_standard (SecurityType security_type, string security_name, DateTime security_expiration, bool map_expiration, bool show_security_type, bool use_month_code, bool show_day) {
-         string exp_text = format_expiration_standard(security_type, security_name, security_expiration, map_expiration, use_month_code, show_day);
-         return !show_security_type ? String.Format("{0} {1}", security_name, exp_text) : String.Format("{0} {1} {2}", security_type.ToString().ToUpper(), security_name, exp_text);
-      }
-
-      public static string format_option_expiration_condensed(string option_name, DateTime option_expiration, bool map_expiration, bool show_symbol_name, bool show_year)
-      {
-         DateTime mapped_expiration = map_expiration ? convert_real_to_mapped(SecurityType.Option, option_name, option_expiration) : option_expiration;
-         return String.Format("{0}{1}", show_symbol_name ? option_name : String.Empty, DateFormatter.format_condensed(mapped_expiration, true, show_year));
-      }
-
-      public static DateTime parse_standard_formatted_expiration(SecurityType security_type, string security_name, string security_expiration) { return DateFormatter.parse_standard(security_expiration); }
-   }
-}
@@ -17,7 +17,8 @@ namespace mbts.utils {
   /// <seealso cref="Observable.SelectMany"/>
   class KeyDrivenObservableSeries<TKey, TValue> : ISubject<TKey, TValue>, IDisposable {
      readonly Func<TKey, IObservable<TValue>> _selector;
-      object _lock = new object();
+      readonly object _lock = new object();
+      bool _is_disposed;
      Subject<TValue> _value_subject = new Subject<TValue>();
      IDisposable _current_key_sub;

@@ -31,15 +32,19 @@ namespace mbts.utils {
            // need to lock bc simultaneous callbacks on diff threads could generate 2 subscriptions at once,
            // only 1 of which would get disposed in the next callback.
            Disposable.dispose(ref _current_key_sub);
-            _current_key_sub = _selector(key)?.Subscribe(_value_subject);
+            if (!_is_disposed)
+               _current_key_sub = _selector(key)?.Subscribe(_value_subject);
         }
      }

      public IDisposable Subscribe(IObserver<TValue> observer) => _value_subject.Subscribe(observer);

      public void Dispose() {
-         Disposable.dispose(ref _current_key_sub);
-         Disposable.dispose(ref _value_subject);
+         lock (_lock) {
+            _is_disposed = true;
+            Disposable.dispose(ref _current_key_sub);
+            Disposable.dispose(ref _value_subject);
+         }
      }
   }

@@ -0,0 +1,36 @@
+namespace mbts.utils {
+   /// <summary>
+   /// Facilities multi-threaded read/write operations to a particular <typeparamref name="T"/> reference.
+   /// </summary>
+   /// <typeparam name="T">The reference type to be read/written.</typeparam>
+   class RefValueContainer<T> where T : class {
+      readonly object _lock = new object();
+      T _value;
+      bool _is_dirty;
+
+      /// <summary>
+      /// Returns the current value if it has not been read already, otherwise returns null.
+      /// </summary>
+      public T read_new_value() {
+         lock (_lock) {
+            if (_is_dirty) {
+               _is_dirty = false;
+               return _value;
+            }
+            return null;
+         }
+      }
+
+      public void write_value(T value) {
+         lock (_lock) {
+            _is_dirty = true;
+            _value = value;
+         }
+      }
+
+      public void mark_dirty() {
+         lock (_lock)
+            _is_dirty = true;
+      }
+   }
+}
@@ -110,7 +110,7 @@ namespace mbts.ui.shell
      #endregion

      #region automatic property
-      protected delegate void PropertyChange<T>(T oldval, T newval);
+      protected internal delegate void PropertyChange<T>(T oldval, T newval);

      // use nameof() to add compile time checks
      protected Property<T> backing<T>(string name, T default_value = default(T)) =>
@@ -526,7 +526,7 @@ namespace mbts.ui.shell
      /// <para/>If the user has not selected an item, but the current items do not contain the desired item, it will re-evaluate whether or not to select the item when new items arrive.
      /// </summary>
      protected SelectorProperty<T> backing<T>(string name, IObservable<IEnumerable<T>> items, IObservable<InlineUserProperty<T>> desired_item, Func<T> select_default, IReadOnlyList<PropertyValidation<T>> validation_steps) =>
-         backing(name, items, desired_item, select_default, null, validation_steps);
+         backing(name, items, desired_item, select_default, EqualityComparer<T>.Default, validation_steps);

      /// <summary>
      /// Returns a SelectorProperty&lt;T&gt; that observes an items source, and a desired item.  When either observable ticks, it determines whether or not to assign the selected_item property.
@@ -538,8 +538,8 @@ namespace mbts.ui.shell
      /// <param name="desired_item">The observable sequence of a desired item.</param>
      /// <param name="select_default">The fallback function to select an item by default.</param>
      /// <param name="items_match">The item-matching function used to preserve a selected item when new items arrive.</param>
-      protected SelectorProperty<T> backing<T>(string name, IObservable<IEnumerable<T>> items, IObservable<InlineUserProperty<T>> desired_item, Func<T> select_default, Func<T, T, bool> items_match) =>
-         backing(name, items, desired_item, select_default, items_match, new List<PropertyValidation<T>>(0));
+      protected SelectorProperty<T> backing<T>(string name, IObservable<IEnumerable<T>> items, IObservable<InlineUserProperty<T>> desired_item, Func<T> select_default, IEqualityComparer<T> comparer) =>
+         backing(name, items, desired_item, select_default, comparer, new List<PropertyValidation<T>>(0));

      /// <summary>
      /// Returns a SelectorProperty&lt;T&gt; that observes an items source, and a desired item.  When either observable ticks, it determines whether or not to assign the selected_item property.
@@ -552,14 +552,24 @@ namespace mbts.ui.shell
      /// <param name="select_default">The fallback function to select an item by default.</param>
      /// <param name="items_match">The item-matching function used to preserve a selected item when new items arrive.</param>
      /// <param name="validation_steps">The validation steps to take when selected_item changes.</param>
-      protected SelectorProperty<T> backing<T>(string name, IObservable<IEnumerable<T>> items, IObservable<InlineUserProperty<T>> desired_item, Func<T> select_default, Func<T, T, bool> items_match, IReadOnlyList<PropertyValidation<T>> validation_steps) {
-         if (_observable_properties == null) _observable_properties = new List<IDisposable>();
-         var prop = new SelectorProperty<T>(this, name, select_default, items_match, validation_steps);
-         _observable_properties.Add(items.OnDispatcher().Subscribe(prop));
-         _observable_properties.Add(desired_item.OnDispatcher().Subscribe(prop));
+      protected SelectorProperty<T> backing<T>(string name, IObservable<IEnumerable<T>> items, IObservable<InlineUserProperty<T>> desired_item, Func<T> select_default, IEqualityComparer<T> comparer, IReadOnlyList<PropertyValidation<T>> validation_steps) {
+         var prop = new SelectorProperty<T>(this, name, select_default, comparer, validation_steps);
+         attach(prop, items, desired_item);
         return prop;
      }

+      protected SelectorProperty<T, V> backing<T, V>(string name, IObservable<IEnumerable<T>> items, IObservable<InlineUserProperty<T>> desired_item, Func<T, V> item_to_value, Func<V> select_default, IEqualityComparer<V> comparer, IReadOnlyList<PropertyValidation<V>> validation_steps) {
+         var prop = new SelectorProperty<T, V>(this, name, item_to_value, select_default, comparer, validation_steps);
+         attach(prop, items, desired_item);
+         return prop;
+      }
+
+      protected void attach<T, V>(SelectorProperty<T, V> selector_property, IObservable<IEnumerable<T>> items, IObservable<InlineUserProperty<T>> desired_item) {
+         if (_observable_properties == null) _observable_properties = new List<IDisposable>();
+         _observable_properties.Add(items.OnDispatcher().Subscribe(selector_property));
+         _observable_properties.Add(desired_item.OnDispatcher().Subscribe(selector_property));
+      }
+
      protected void set_dispose(IDisposable disposable) {
         if (_dispose != null) throw new InvalidOperationException("Cannot set disposable twice");
         _dispose = disposable;
@@ -576,37 +586,44 @@ namespace mbts.ui.shell
         OnDisposed?.Invoke(true);
      }

+      protected class SelectorProperty<T> : SelectorProperty<T, T> {
+         public SelectorProperty(DisposableViewModelBase owner, string prop_name, Func<T> select_default, IEqualityComparer<T> comparer, IReadOnlyList<PropertyValidation<T>> validation_steps)
+            : base(owner, prop_name, i => i, select_default, comparer, validation_steps) { }
+      }
+
      /// <summary>
      /// Designed to observe an items source, and a [settings-driven] desired item.  When a new desired item is observed, it will evaluate it's current state and determine if it should be assigned to the selected_item.
      /// <para/>Notes: If the user has selected an item (ie the selected_item has been assigned through the public setter), the desired item will be ignored unless force_override is true.
      /// <para/>If the user has not selected an item, but the current items do not contain the desired item, it will re-evaluate whether or not to select the item when new items arrive.
      /// </summary>
-      protected class SelectorProperty<T> : IObserver<InlineUserProperty<T>>, IObserver<IEnumerable<T>>, IObservable<(T oldval, T newval)> {
+      protected class SelectorProperty<TItem, TValue> : IObserver<InlineUserProperty<TItem>>, IObserver<IEnumerable<TItem>>, IObservable<(TValue oldval, TValue newval)> {
         readonly DisposableViewModelBase _owner;
         readonly string _prop_name;
-         readonly IReadOnlyList<PropertyValidation<T>> _validation_steps;
-         readonly ObservableCollection<T> _items = new ObservableCollection<T>();
-         readonly Func<T> _select_default;
-         readonly Func<T, T, bool> _items_match; // used to maintain selected_item through an items-change
-         T _selected_item;
-         InlineUserProperty<T> _desired_item;
+         readonly IReadOnlyList<PropertyValidation<TValue>> _validation_steps;
+         readonly ObservableCollection<TItem> _items = new ObservableCollection<TItem>();
+         readonly Func<TValue> _select_default;
+         readonly IEqualityComparer<TValue> _value_comparer;
+         readonly Func<TItem, TValue> _item_to_value;
+         TValue _selected_item;
+         InlineUserProperty<TItem> _desired_item = new InlineUserProperty<TItem>();
         bool _is_user_selected_item;

-         public SelectorProperty(DisposableViewModelBase owner, string prop_name, Func<T> select_default, Func<T, T, bool> items_match, IReadOnlyList<PropertyValidation<T>> validation_steps) {
+         public SelectorProperty(DisposableViewModelBase owner, string prop_name, Func<TItem, TValue> item_to_value, Func<TValue> select_default, IEqualityComparer<TValue> value_comparer, IReadOnlyList<PropertyValidation<TValue>> validation_steps) {
            _owner = owner;
            _prop_name = prop_name;
+            _item_to_value = item_to_value;
            _select_default = select_default;
-            _items_match = items_match;
+            _value_comparer = value_comparer ?? EqualityComparer<TValue>.Default;
            _validation_steps = validation_steps;
-            items = new ReadOnlyObservableCollection<T>(_items);
+            items = new ReadOnlyObservableCollection<TItem>(_items);
         }

-         public event PropertyChange<T> Changing;
-         public event PropertyChange<T> Changed;
+         public event PropertyChange<TValue> Changing;
+         public event PropertyChange<TValue> Changed;

-         public ReadOnlyObservableCollection<T> items { get; }
+         public ReadOnlyObservableCollection<TItem> items { get; }

-         public T selected_item {
+         public TValue selected_item {
            get => _selected_item;
            set {
               _is_user_selected_item = true;
@@ -614,31 +631,31 @@ namespace mbts.ui.shell
            }
         }

-         public IDisposable Subscribe(IObserver<(T oldval, T newval)> observer) {
+         public IDisposable Subscribe(IObserver<(TValue oldval, TValue newval)> observer) {
            Changed += pch;
            return Disposable.Create(() => Changed -= pch);
-            void pch(T o, T n) => observer.OnNext((o, n));
+            void pch(TValue o, TValue n) => observer.OnNext((o, n));
         }

-         public IObservable<T> observe_current(bool start_now = false) {
+         public IObservable<TValue> observe_current(bool start_now = false) {
            var source = this.Select(vals => vals.newval);
            if (start_now)
-               source = source.StartWith(_selected_item);
+               source = source.StartWith(selected_item);
            return source;
         }

-         void IObserver<InlineUserProperty<T>>.OnNext(InlineUserProperty<T> iup) {
+         void IObserver<InlineUserProperty<TItem>>.OnNext(InlineUserProperty<TItem> iup) {
            _desired_item = iup;
            _try_auto_select();
         }
-         void IObserver<InlineUserProperty<T>>.OnError(Exception error) { }
-         void IObserver<InlineUserProperty<T>>.OnCompleted() { }
+         void IObserver<InlineUserProperty<TItem>>.OnError(Exception error) { }
+         void IObserver<InlineUserProperty<TItem>>.OnCompleted() { }

-         void IObserver<IEnumerable<T>>.OnNext(IEnumerable<T> value) {
-            if (_items_match != null && _is_user_selected_item) {
+         void IObserver<IEnumerable<TItem>>.OnNext(IEnumerable<TItem> value) {
+            if (_is_user_selected_item) {
               var curr_selected_item = selected_item;
               _items.sync_with(value);
-               if (_try_match_item(curr_selected_item, out T match))
+               if (_try_match_item(curr_selected_item, out TValue match))
                  selected_item = match;
               else {
                  _is_user_selected_item = false;
@@ -646,18 +663,13 @@ namespace mbts.ui.shell
               }
            } else {
               _items.sync_with(value);
-               if (_is_user_selected_item) {
-                  _is_user_selected_item = _items.Contains(_selected_item);
-               }
-               if (!_is_user_selected_item) {
-                  _try_auto_select();
-               }
+               _try_auto_select();
            }
         }
-         void IObserver<IEnumerable<T>>.OnError(Exception error) { }
-         void IObserver<IEnumerable<T>>.OnCompleted() { }
+         void IObserver<IEnumerable<TItem>>.OnError(Exception error) { }
+         void IObserver<IEnumerable<TItem>>.OnCompleted() { }

-         void _run_validation(T val) {
+         void _run_validation(TValue val) {
            var invalid_steps = _validation_steps.Select(v => v.validate(val)).Where(r => !r.valid);
            if (invalid_steps.Count() > 0) {
               var error_msg = string.Join("\n", invalid_steps.Where(r => !string.IsNullOrEmpty(r.msg)).Select(r => r.msg));
@@ -667,15 +679,15 @@ namespace mbts.ui.shell

         void _try_auto_select() {
            if (_is_user_selected_item) {
-               if (desired_item_valid() && _desired_item.force_override && _try_match_item(_desired_item.value, out T match)) {
+               if (desired_item_valid() && _desired_item.force_override && _try_match_item(_desired_item.value, out TValue match)) {
                  _set_selected_item(match);
                  return;
               }
-            } else if (desired_item_valid() && _try_match_item(_desired_item.value, out T match)) {
+            } else if (desired_item_valid() && _try_match_item(_desired_item.value, out TValue match)) {
               _set_selected_item(match);
               return;
            }
-            if (_try_match_item(_select_default(), out T default_match))
+            if (_try_match_item(_select_default(), out TValue default_match))
               _set_selected_item(default_match);
            else {
               // the _set_selected_item has never been entered, so validation has never ran, force it here
@@ -685,8 +697,8 @@ namespace mbts.ui.shell
            bool desired_item_valid() => (_desired_item?.has_value).GetValueOrDefault();
         }

-         void _set_selected_item(T value) {
-            if (!Equals(value, _selected_item)) {
+         void _set_selected_item(TValue value) {
+            if (!_value_comparer.Equals(value, _selected_item)) {
               Changing?.Invoke(_selected_item, value);
               var old = _selected_item;
               _selected_item = value;
@@ -696,10 +708,20 @@ namespace mbts.ui.shell
            }
         }

-         bool _try_match_item(T item, out T match) =>
-            _items_match != null ?
-               _items.TryGetFirst(i => _items_match(i, item), out match) :
-               _items.TryGetFirst(i => i.Equals(item), out match);
+         bool _try_match_item(TValue value, out TValue match) {
+            foreach (TItem item in _items) {
+               TValue v = _item_to_value(item);
+               if (_value_comparer.Equals(v, value)) {
+                  match = v;
+                  return true;
+               }
+            }
+            match = default;
+            return false;
+         }
+
+         bool _try_match_item(TItem item, out TValue match) =>
+            _try_match_item(_item_to_value(item), out match);
      }

      public event Action<bool> OnDisposed;
@@ -0,0 +1,47 @@
+using bts.utils;
+using mbts.ui;
+using ProtoBuf;
+using System;
+using System.Windows.Media;
+
+namespace bts.proto {
+   [ProtoContract]
+   struct ColorShowProto : IEquatable<ColorShowProto> {
+      [ProtoMember(1)]
+      readonly uint _value;
+      [ProtoMember(2)]
+      readonly bool _show;
+
+      public ColorShowProto(Color value, bool show = true)
+         : this(value.rgb_color(), show) { }
+
+      public ColorShowProto(uint value, bool show = true) {
+         _value = value;
+         _show = show;
+      }
+
+      public Color color => _value.rgb_color();
+      public bool show => _show;
+
+      public Color? result {
+         get {
+            if (_show)
+               return color;
+            return null;
+         }
+      }
+
+      public bool Equals(ColorShowProto other) =>
+         _value == other._value &&
+         _show == other._show;
+
+      public override bool Equals(object obj) =>
+         obj is ColorShowProto ncp && Equals(ncp);
+
+      public override int GetHashCode() =>
+         EqualityComparer.aggregate_hash(_value.GetHashCode(), _show.GetHashCode());
+
+      public static bool operator ==(ColorShowProto a, ColorShowProto b) => a.Equals(b);
+      public static bool operator !=(ColorShowProto a, ColorShowProto b) => !a.Equals(b);
+   }
+}
@@ -15,7 +15,7 @@ namespace mbts.spark {
         value = initial_value;
      }

-      event Action<(T oldval, T newval)> _value_set;
+      protected event Action<(T oldval, T newval)> _value_set;

      public T value { get; private set; }
      public string text => _text ?? (_text = _format(value));
@@ -24,7 +24,7 @@ namespace mbts.ui.controls {
         bool _is_mouse_over_text, _can_execute;
         Pen _underline_pen;

-         static HyperlinkCell() =>
+         static HyperlinkCell() {
            WPFHelper.override_metadata<HorizontalAlignment, HyperlinkCell>(
               HorizontalAlignmentProperty,
               FrameworkPropertyMetadataOptions.AffectsArrange |
@@ -33,6 +33,13 @@ namespace mbts.ui.controls {
                  o._horizontal_alignment = v;
                  o._glyph_run = null;
               }, HorizontalAlignment.Left);
+            WPFHelper.override_metadata<double, HyperlinkCell>(
+               WidthProperty,
+               FrameworkPropertyMetadataOptions.AffectsArrange |
+               FrameworkPropertyMetadataOptions.AffectsMeasure |
+               FrameworkPropertyMetadataOptions.AffectsRender,
+               (o, v) => o._glyph_run = null);
+         }

         public HyperlinkCell() {
            _background = Background;
@@ -279,24 +286,50 @@ namespace mbts.ui.controls {
               drawingContext.DrawGlyphRun(_foreground, _glyph_run);
               if (_is_mouse_over_text) {
                  // draw underline
-                  var pt = new Point(Padding.Left, 0.5 * (ActualHeight + _font_size) + 1);
+                  Point pt;
+                  switch (_horizontal_alignment) {
+                     case HorizontalAlignment.Left:
+                        pt = new Point(Padding.Left, 0.5 * (ActualHeight + _font_size) + 1);
+                        break;
+                     case HorizontalAlignment.Right:
+                        pt = new Point(ActualWidth - Padding.Right - _glyph_width, 0.5 * (ActualHeight + _font_size) + 1);
+                        break;
+                     case HorizontalAlignment.Center:
+                     default:
+                        pt = new Point(0.5 * (ActualWidth - _glyph_width), 0.5 * (ActualHeight + _font_size) + 1);
+                        break;
+                  }
                  drawingContext.DrawLine(_underline_pen, pt, new Point(pt.X + _glyph_width, pt.Y));
+
               }
               drawingContext.Pop();
            }
-            var bgo = GetBackgroundOverlay(this);
-            if (bgo != null)
-               drawingContext.DrawRectangle(bgo, null, rect);
+            if (bg != null) {
+               var bgo = GetBackgroundOverlay(this);
+               if (bgo != null)
+                  drawingContext.DrawRectangle(bgo, null, rect);
+            }
+         }
+
+         bool _point_horizontally_over_text(double x) {
+            switch (_horizontal_alignment) {
+               case HorizontalAlignment.Left:
+                  return x >= _padding.Left && x <= _padding.Left + _glyph_width;
+                case HorizontalAlignment.Right:
+                  return x >= ActualWidth - Padding.Right - _glyph_width && x <= ActualWidth - _padding.Right;
+               case HorizontalAlignment.Center:
+               default:
+                  return x >= 0.5 * (ActualWidth - _glyph_width) && x <= 0.5 * (ActualWidth - _glyph_width) + _glyph_width;
+            }
         }

         void _check_mouse_over_text(MouseEventArgs e) {
            var pt = e.GetPosition(this);
            bool over_text =
-               _glyph_run != null &&
-               pt.X >= _padding.Left &&
-               pt.X <= _padding.Left + _glyph_width &&
-               pt.Y >= _padding.Top &&
-               pt.Y <= _padding.Top + _font_size;
+              _glyph_run != null &&
+              _point_horizontally_over_text(pt.X) &&
+              pt.Y >= _padding.Top &&
+              pt.Y <= _padding.Top + _font_size;
            if (_is_mouse_over_text != over_text)
               _toggle_mouse_over_text();
         }
@@ -16,22 +16,40 @@ namespace mbts.ui.controls {
   partial class DIYGrid {
      public static class DefaultColumnWidths {
         public const double
-            Account = 68,
-            Exchange = 74,
+            Account = 80,
+            Exchange = 86,
            FillKey = 68,
            OrderKey = 78,
            OrderType = 88,
-            Price = 56,
+            MViewPrice = 56,
+            Price = 68,
+            AveragePrice = 76,
+            LastPrice = 78,
+            Settlement = 82,
            Security = 80,
            SecurityKey = 90,
+            SecurityType = 96,
            Side = 47,
            Size = 48,
-            Symbol = 48,
-            Time = 100,
+            ImpliedDirectMergedSize = 68,
+            Filled = 56,
+            Symbol = 78,
+            Time = 112,
            TimeInForce = 47,
            TradeKey = 76,
            User = 53,
-            Aggressor = 80;
+            Aggressor = 80,
+            Volume = 74,
+            FillKind = 70,
+            Description = 300,
+            N_Legs = 68,
+            N_Working_Orders = 123,
+            Start_Net_Pos = 100,
+            Total_Net_Pos = 100,
+            PnL_Generic = 80,
+            Working = 72,
+            LastMessage = 100,
+            ParentKey = 100;
      }

      public static class DefaultColumnHeaders {
@@ -45,14 +63,41 @@ namespace mbts.ui.controls {
            Price = "Price",
            Security = "Security",
            SecurityKey = "Security Key",
+            SecurityType = "Security Type",
            Side = "Side",
            Size = "Qty",
+            MergedSize = "Qty (M)",
+            DirectSize = "Qty (D)",
+            ImpliedSize = "Qty (I)",
            Symbol = "Symbol",
            TimeInForce = "TIF",
            TradeKey = "Trade Key",
            User = "User",
            Time = "Time",
-            Aggressor = "Aggressor";
+            Aggressor = "Aggressor",
+            Volume = "Volume",
+            Last = "Last",
+            Pos = "Pos",
+            Working = "Working",
+            Bid = "Bid",
+            Ask = "Ask",
+            Settlement = "Settlement",
+            DayChange = "Change",
+            SessionLow = "Low",
+            SessionHigh = "High",
+            FillKind = "Fill Kind",
+            Name = "Name",
+            Description = "Description",
+            N_Legs = "# Legs",
+            N_Working_Orders = "# Working Orders",
+            StartNetPos = "Start Net Pos",
+            StartPnL = "Start PnL",
+            DayLong = "Day Long",
+            DayShort = "Day Short",
+            DayPnL = "Day PnL",
+            TotalNetPos = "Total Net Pos",
+            TotalPnL = "Total PnL",
+            PnLPrice = "PnL Price";
      }

      public interface IKeyedColumn<TColKey> {
@@ -158,7 +203,7 @@ namespace mbts.ui.controls {
         public virtual void load_from(GridColumnSettings settings) {
            if (settings == null)
               return;
-            using (ReflectionHelper.detect_property_changes(this, raise_prop_changed, nameof(is_visible), nameof(is_collapsed), nameof(font_weight_override), nameof(font_weight),
+            using (ReflectionHelper.detect_property_changes(this, _raise_prop_changed, nameof(is_visible), nameof(is_collapsed), nameof(font_weight_override), nameof(font_weight),
               nameof(font_color_override), nameof(font_color), nameof(font_brush), nameof(font_family), nameof(font_size), nameof(horizontal_alignment), nameof(horizontal_offset))) {
               //
               id = settings.id;
@@ -176,21 +221,24 @@ namespace mbts.ui.controls {
               Width = original_width;
            }
            //
-            void raise_prop_changed(string prop) =>
-               OnPropertyChanged(new PropertyChangedEventArgs(prop));
         }

         // 'fallback' font-params (aka 'grid-level' font-params)
         public void set_fallback_font_params(FontFamily font_family, double font_size, Color font_color, FontWeight font_weight) {
-            _fallback_font_family = font_family;
-            _fallback_font_size = font_size;
-            _fallback_font_color = font_color;
-            _fallback_font_weight = font_weight;
+            using (ReflectionHelper.detect_property_changes(this, _raise_prop_changed, nameof(font_family), nameof(font_size), nameof(font_color), nameof(font_weight))) {
+               _fallback_font_family = font_family;
+               _fallback_font_size = font_size;
+               _fallback_font_color = font_color;
+               _fallback_font_weight = font_weight;
+            }
            font_params_changed?.Invoke();
         }

         protected virtual void OnSortDirectionChanged(ListSortDirection? new_value) =>
            sort_direction_changed?.Invoke(this, new_value);
+
+         void _raise_prop_changed(string prop) =>
+            OnPropertyChanged(new PropertyChangedEventArgs(prop));
      }

      internal abstract class ColumnBase<TColKey> : ColumnBase, IKeyedColumn<TColKey>, IGridColumn {
@@ -29,9 +29,13 @@ namespace mbts.ui.controls {
            background_overlay = selection_fill;

         public override FrameworkElement view_factory() {
-            var hl = new HyperlinkCell { Foreground = font_brush, Background = background, FontSize = font_size, Padding = padding };
+            var hl = new HyperlinkCell { Foreground = font_brush, Background = background, Padding = padding };
            hl.SetBinding(HyperlinkCell.TextProperty, _binding);
+            hl.SetBinding(HyperlinkCell.FontFamilyProperty, new Binding(nameof(font_family)) { Source = this });
+            hl.SetBinding(HyperlinkCell.FontSizeProperty, new Binding(nameof(font_size)) { Source = this });
+            hl.SetBinding(HyperlinkCell.HorizontalAlignmentProperty, new Binding(nameof(horizontal_alignment)) { Source = this });
            hl.SetBinding(HyperlinkCell.CommandProperty, _command_binding);
+            hl.SetBinding(HyperlinkCell.WidthProperty, new Binding(nameof(ActualWidth)) { Source = this });
            if (background_overlay != null) {
               hl.SetBinding(BackgroundOverlayProperty, new Binding(nameof(ListBoxItem.IsSelected)) {
                  Converter = new AnonymousValueConverter<bool, Brush>(val => val ? background_overlay : null),
@@ -22,8 +22,10 @@ namespace mbts.ui.controls {
         public VerticalAlignment vertical_alignment { get; set; } = VerticalAlignment.Center;

         public override FrameworkElement view_factory() {
-            var v = new TextCell { FontFamily = font_family, FontSize = font_size, Foreground = font_brush, HorizontalAlignment = horizontal_alignment, VerticalAlignment = vertical_alignment };
+            var v = new TextCell { Foreground = font_brush, HorizontalAlignment = horizontal_alignment, VerticalAlignment = vertical_alignment };
            v.SetBinding(TextCell.TextProperty, _binding);
+            v.SetBinding(TextCell.FontFamilyProperty, new Binding(nameof(font_family)) { Source = this });
+            v.SetBinding(TextCell.FontSizeProperty, new Binding(nameof(font_size)) { Source = this });
            try_set_binding(TextCell.BackgroundProperty, background_binding);
            try_set_binding(TextCell.ForegroundProperty, foreground_binding);
            try_set_binding(TextCell.FontWeightProperty, font_weight_binding);
@@ -1,21 +1,26 @@
-using mbts.spark;
+using bts.shell;
+using mbts.spark;
 using mbts.spark.filters;
+using mbts.ui.spark;
 using mbts.ui.utility.text;
 using System;
 using System.Windows.Media;

 namespace mbts.ui.controls {
   partial class DIYGrid {
-      internal class TimeAndSalesColumn : RenderTextColumn<TimeAndSalesVM.Row> {
-
-         readonly Func<TimeAndSalesVM.Row, string> _get_text;
+      internal class TimeAndSalesColumn : RenderTextColumn<TimeAndSalesVM.Row>, IKeyedColumn<TimeAndSalesView.Columns> {
         readonly Func<TimeAndSalesVM.Row, Brush> _get_brush;

-         public TimeAndSalesColumn(Func<TimeAndSalesVM.Row, string> get_text, Func<TimeAndSalesVM.Row, Brush> get_brush, IDataGridColumnFilter filter = null, string filter_template = null, GlyphContext glyph_context = null) : base(get_text, filter, filter_template, glyph_context) {
-            _get_text = get_text;
+         public TimeAndSalesColumn(TimeAndSalesView.Columns key, Func<TimeAndSalesVM.Row, Brush> get_brush, IDataGridColumnFilter filter = null, string filter_template = null)
+            : base(r => r[key], filter, filter_template) {
+            this.key = key;
+            // id is used for settings (another case of ProtoBufs vs Generics - strings seemed like the easiest way to provide an identifier for the common GridColumnSettings proto)
+            id = TimeAndSalesWindowFactory.col_id(key);
            _get_brush = get_brush;
         }

+         public TimeAndSalesView.Columns key { get; }
+
         public override void draw(TimeAndSalesVM.Row row, DrawingContext dc, ColumnGeometry position, double row_height) {
            CellRender.draw_text(dc
               , glyph_context
@@ -20,18 +20,20 @@ namespace mbts.ui.controls {
      }

      public class RenderTextColumn<TRowVM> : RenderColumnBase<TRowVM>, IRenderColumn<TRowVM>, IFilterableColumn {
-         readonly Func<TRowVM, string> _get_text;
+         protected readonly Func<TRowVM, string> _get_text;

         public RenderTextColumn(
            Func<TRowVM, string> get_text,
            IDataGridColumnFilter filter = null,
-            string filter_template = null,
-            GlyphContext glyph_context = null)
+            string filter_template = null)
            : base() {
            _get_text = get_text;
            this.filter = filter;
            this.filter_template = filter_template;
-            this.glyph_context = glyph_context ?? TextUtils.StandardGlyphContext;
+            font_params_changed += refresh_glyph_context;
+            refresh_glyph_context();
+            void refresh_glyph_context() =>
+               glyph_context = GlyphContext.create(font_family, font_weight);
         }

         public IDataGridColumnFilter filter { get; }
@@ -39,7 +41,7 @@ namespace mbts.ui.controls {
         public Brush background { get; set; }
         public VerticalAlignment vertical_alignment { get; set; } = VerticalAlignment.Center;
         public Thickness padding { get; set; } = DefaultCellPadding;
-         public GlyphContext glyph_context { get; set; } = TextUtils.StandardGlyphContext;
+         public GlyphContext glyph_context { get; private set; }

         public override void draw(TRowVM row, DrawingContext dc, ColumnGeometry position, double row_height) =>
            CellRender.draw_text(
@@ -335,6 +335,8 @@
            <ScrollBar Grid.Row="3" Grid.Column="1" Orientation="Horizontal" LargeChange="10" x:Name="_scroll_horiz" />

            <!-- todo: All edit controls go in a canvas - edit api is called with an edit type. Hide all controls -->
+            <!--  This stole hours of my life. The Text binding down there used to be 'value' and I was encountering -->
+            <!--  another bug, but this thing sent me down a rabbit hole. F you TickUpDown -->
            <bts:TickUpDown Grid.RowSpan="3" Grid.ColumnSpan="2" Width="0" Height="0" HorizontalAlignment="Left" VerticalAlignment="Top"
                     TickUpCommand="{Binding tick_up}" TickDownCommand="{Binding tick_down}"
                     x:Name="_edit" Visibility="Collapsed">
@@ -28,7 +28,7 @@ namespace mbts.ui.controls {
         new AnonymousValueConverter(obj =>
            obj is SoundNotification.SystemSound s ?
               EnumHelper.get_attribute<SoundNotification.SystemSound, LicenseAttribute>(s)?.link : null);
- 
+
      public static readonly DependencyProperty BusProperty =
         WPFHelper.create_dp<IBus, SoundAnimationView>(nameof(Bus));

@@ -38,7 +38,11 @@ namespace mbts.ui.controls {
      }

      public static ICommand PreviewSoundCommand =>
-         new DelegateCommand<SoundNotification.SystemSound>(s => NAudioPlayer.create(s).play());
+         new DelegateCommand<SoundNotification.SystemSound>(s =>  {
+            try {
+               NAudioPlayer.create(s).play();
+            } catch (NAudio.MmException) { }
+         });

      #region SoundTypes
      public static readonly DependencyProperty SoundTypesProperty =
@@ -92,7 +92,7 @@ namespace mbts.ui.settings {

      public GridColumnSettings with(
         string display_name = null, bool? is_visible = null, bool? is_collapsed = null, NullableFontWeightProto? font_weight_override = null, NullableColorProto? font_color_override = null,
-         double? width = _default_width, HorizontalAlignment? horizontal_alignment = _default_horizontal_alignment, double? horizontal_offset = null) =>
+         double? width = null, HorizontalAlignment? horizontal_alignment = null, double? horizontal_offset = null) =>
         //
         new GridColumnSettings(_id,
            display_name ?? this.display_name,
@@ -4,7 +4,6 @@ using mbts.ui;
 using mbts.ui.controls;
 using mbts.ui.settings;
 using mbts.ui.shell;
-using mbts.ui.utilities;
 using mbts.ui.utility;
 using System;
 using System.Collections.Generic;
@@ -28,22 +27,15 @@ namespace mbts.spark {
      ImmutableFontWeight
   }

-   partial class GridSettingsVM<TRowData, TPredicateBuilder> {
-      public interface IColumnVM : IValueFactory<(GridColumnSettings settings, ILookup<TPredicateBuilder, CellAnimation> animations)>, IDisposable {
+   partial class GridSettingsVM<TRowData, TPredicateBuilder, TSettingsData> {
+      public interface IColumnVM : ISimpleColumnVM, IValueFactory<(GridColumnSettings settings, ILookup<TPredicateBuilder, CellAnimation> animations)>, IDisposable {
         ObservableEditableCollection<PredicateCellAnimationVM> predicate_animations { get; }
-         string id { get; }
-         string display_name { get; set; }
-         double width { get; set; }
-         bool is_visible { get; set; }
-         bool is_font_color_overridden { get; set; }
-         ColorPickerPopupVM font_color_override { get; }
-         bool is_font_weight_overridden { get; set; }
-         FontWeight font_weight_override { get; set; }
-         void apply_flags(GridColumnSettingsFeatureFlags flags);
+         new (GridColumnSettings settings, ILookup<TPredicateBuilder, CellAnimation> animations) create();
+         new void load_from((GridColumnSettings settings, ILookup<TPredicateBuilder, CellAnimation> animations) args);
      }

      public class ColumnVM : DisposableViewModelBase, IColumnVM {
-         public readonly GridSettingsVM<TRowData, TPredicateBuilder> owner;
+         public readonly GridSettingsVM<TRowData, TPredicateBuilder, TSettingsData> owner;

         readonly Property<string> _id, _display_name;
         readonly Property<double> _width;
@@ -52,7 +44,7 @@ namespace mbts.spark {
         readonly Property<FontWeight> _font_weight_override;
         GridColumnSettings _settings;

-         public ColumnVM(GridSettingsVM<TRowData, TPredicateBuilder> owner) {
+         public ColumnVM(GridSettingsVM<TRowData, TPredicateBuilder, TSettingsData> owner) {
            this.owner = owner;
            _id = backing(nameof(id), string.Empty);
            _display_name = backing(nameof(display_name), string.Empty);
@@ -107,6 +99,7 @@ namespace mbts.spark {
            _horizontal_alignment.set(_settings.horizontal_alignment);
            _is_visible.set(_settings.is_visible);
            _is_font_weight_overridden.set(_settings.font_weight_override.HasValue);
+            _is_font_color_overridden.set(_settings.font_color_override.HasValue);
            if (is_font_weight_overridden) {
               _font_weight_override.set(_settings.font_weight_override.Value);
            }
@@ -133,6 +126,12 @@ namespace mbts.spark {
         }

         public override string ToString() => $"{display_name} ({id})";
+
+         GridColumnSettings IValueFactory<GridColumnSettings>.create() =>
+            create().settings;
+
+         void IValueFactory<GridColumnSettings>.load_from(GridColumnSettings value) =>
+            load_from((value, new Dictionary<TPredicateBuilder, CellAnimation>().ToLookup(kv => kv.Key, kv => kv.Value)));
      }

      public class PredicateCellAnimationVM : DisposableViewModelBase, IValueFactory<(TPredicateBuilder predicate, IEnumerable<CellAnimation> animations)> {
@@ -1,7 +1,9 @@
 using bts.proto;
+using bts.utils;
 using mbts.ui.controls;
 using mbts.ui.converters;
 using ProtoBuf;
+using System;
 using System.Collections.Generic;
 using System.ComponentModel;
 using System.Windows;
@@ -10,7 +12,7 @@ using System.Windows.Media;

 namespace mbts.ui.settings {
   [ProtoContract]
-   class GridSettings {
+   class GridSettings : IEquatable<GridSettings> {
      const string _default_font_family = "Segoe UI";
      const double _default_font_size = 11;
      const uint _default_font_color = 0;
@@ -94,6 +96,7 @@ namespace mbts.ui.settings {
      public FontWeight font_weight => FontWeight.FromOpenTypeWeight(_font_weight);
      public ColorOpacityProto selection_highlight => _selection_highlight;
      public IReadOnlyList<GridColumnSettings> columns => _columns;
+      [Obsolete] // TODO: remove sorting_criterion from GridSettings entirely. This should be part of IShellWindow's StartupData, since it is an instance-specific setting, and prob not part of the shared defaults
      public IReadOnlyList<SortingCriteria> sorting_criterion => _sorting_criterion;

      public static GridSettings get_default() =>
@@ -110,5 +113,32 @@ namespace mbts.ui.settings {
            sorting_criterion ?? _sorting_criterion);

      public GridSettings clone() => with();
+
+      public bool Equals(GridSettings other) =>
+         other != null &&
+         font_family == other.font_family &&
+         font_size == other.font_size &&
+         font_weight == other.font_weight &&
+         font_color == other.font_color &&
+         selection_highlight == other.selection_highlight &&
+         EqualityComparer.safe_sequence_equals(columns, other.columns) &&
+#pragma warning disable CS0612 // Type or member is obsolete
+         EqualityComparer.safe_sequence_equals(sorting_criterion, other.sorting_criterion);
+#pragma warning restore CS0612 // Type or member is obsolete
+
+      public override bool Equals(object obj) =>
+         Equals(obj as GridSettings);
+
+      public override int GetHashCode() =>
+         EqualityComparer.aggregate_hash(
+            font_family.GetHashCode(),
+            font_size.GetHashCode(),
+            font_weight.GetHashCode(),
+            font_color.GetHashCode(),
+            selection_highlight.GetHashCode(),
+            EqualityComparer.safe_aggregate_hash(columns),
+#pragma warning disable CS0612 // Type or member is obsolete
+            EqualityComparer.safe_aggregate_hash(sorting_criterion));
+#pragma warning restore CS0612 // Type or member is obsolete
   }
 }
@@ -1,4 +1,5 @@
-using bts.api;
+using bts;
+using bts.api;
 using bts.shell;
 using mbts.collections;
 using mbts.spark;
@@ -17,10 +18,10 @@ using System.Windows.Media;
 using static mbts.ui.controls.DIYGrid;

 namespace mbts.ui {
-   class GridSettingsManager<TRow, TRowData, TPredicateBuilderArg, TPredicateBuilder> :
-      ViewModelBase, IValueFactory<(GridSettings grid, IEnumerable<IPredicateAnimationsData<TRowData, TPredicateBuilder>> predicate_animations_data)>, IDisposable
+   class GridSettingsManager<TRow, TRowData, TPredicateBuilderArg, TPredicateBuilder, TSettingsData> : ViewModelBase, IValueFactory<TSettingsData>, IObserver<TSettingsData>, IDisposable
      where TRow : IRowVM<TRowData>
-      where TPredicateBuilder : IPredicateBuilder<TRowData, TPredicateBuilderArg>, new() {
+      where TPredicateBuilder : IPredicateBuilder<TRowData, TPredicateBuilderArg>, new()
+      where TSettingsData : class, IGridSettingsWithNotifications<TRowData, TPredicateBuilder> {
      //
      public readonly ObservableCollection<string> live_sorting_props;

@@ -39,12 +40,18 @@ namespace mbts.ui {
      readonly DelegateProperty<SolidColorBrush> _font_color, _selection_highlight;
      readonly SetMap<IPredicate<TRowData>, AnimationDefinitionWrapper<TRow>> _animation_defs = new SetMap<IPredicate<TRowData>, AnimationDefinitionWrapper<TRow>>();
      readonly TPredicateBuilderArg _arg;
+      readonly Func<IPropertyWrapperVM<TPredicateBuilder>> _create_predicate_vm;
+      readonly Func<string, IPropertyWrapperVM<TPredicateBuilder>> _create_column_predicate_vm;
+      readonly Func<GridSettings, IEnumerable<IPredicateAnimationsData<TRowData, TPredicateBuilder>>, TSettingsData> _create_settings_obj;
+      readonly IReadOnlyDictionary<string, ImmutableColumnSettingStore> _column_flags;
      IEnumerable<IPredicateAnimationsData<TRowData, TPredicateBuilder>> _predicate_animations_data;

      public GridSettingsManager(
         IObservable<string> owner_title, IBus bus, INotificationService notification_service, OrdersModel orders_model, ObservableCollection<TRow> rows,
         ICollectionView rows_view, ObservableCollection<ColumnBase> columns, Func<IPropertyWrapperVM<TPredicateBuilder>> create_predicate_vm,
-         Func<string, IPropertyWrapperVM<TPredicateBuilder>> create_column_predicate_vm, TPredicateBuilderArg arg, IReadOnlyDictionary<string, GridColumnSettingsFeatureFlags> column_flags = null) {
+         Func<string, IPropertyWrapperVM<TPredicateBuilder>> create_column_predicate_vm,
+         Func<GridSettings, IEnumerable<IPredicateAnimationsData<TRowData, TPredicateBuilder>>, TSettingsData> create_settings_obj,
+         TPredicateBuilderArg arg, IReadOnlyDictionary<string, GridColumnSettingsFeatureFlags> column_flags = null) {
         //
         _bus = bus;
         _notification_service = notification_service;
@@ -52,7 +59,11 @@ namespace mbts.ui {
         _rows = rows;
         _rows_view = rows_view;
         _columns = columns;
+         _create_predicate_vm = create_predicate_vm;
+         _create_column_predicate_vm = create_column_predicate_vm;
+         _create_settings_obj = create_settings_obj;
         _arg = arg;
+         _column_flags = column_flags.ToDictionary(kv => kv.Key, kv => ImmutableColumnSettingStore.create(kv.Value));
         _grid_settings = backing(nameof(grid_settings), GridSettings.Default);
         _font_family = backing(nameof(font_family), () => new FontFamily(grid_settings.font_family), nameof(grid_settings));
         _font_weight = backing(nameof(font_weight), () => grid_settings.font_weight, nameof(grid_settings));
@@ -72,10 +83,10 @@ namespace mbts.ui {
         //   return pa;
         //}
         Window create_settings_view() {
-            var vm = new GridSettingsVM<TRowData, TPredicateBuilder>(owner_title, _bus, _orders_model, create_predicate_vm, create_column_predicate_vm);
+            var vm = new GridSettingsVM<TRowData, TPredicateBuilder, TSettingsData>(owner_title, _bus, _orders_model, create_predicate_vm, create_column_predicate_vm, _create_settings_obj);
            // need to refresh before launching the settings-view bc users can chanve some grid-column-settings properties directly from the grid (e.g. width, is_collapsed, etc.)
            _grid_settings.set(grid_settings.with(columns.Select(c => c.create())));
-            vm.load_from((grid_settings, _predicate_animations_data));
+            vm.load(_create_settings_obj(grid_settings, _predicate_animations_data));
            if (column_flags != null) {
               foreach (var col in vm.columns) {
                  if (column_flags.TryGetValue(col.id, out GridColumnSettingsFeatureFlags f))
@@ -84,10 +95,10 @@ namespace mbts.ui {
            }
            var window = new GridSettingsDialog { DataContext = vm };
            vm.committed += () => {
-               var (grid, predicate_animations_data) = vm.create();
+               TSettingsData sd = vm.get_result();
               // IMPORTANT: don't overwrite current sorting
-               grid = grid.with(sorting_criterion: rows_view.get_sorting_criteria(columns));
-               load_from((grid, predicate_animations_data));
+               sd = _create_settings_obj(sd.general.with(sorting_criterion: rows_view.get_sorting_criteria(columns)), sd.predicate_animations);
+               load_from(sd);
            };
            vm.RequestClose += (s, e) => WindowUtilities.force_close(window);
            return window;
@@ -107,20 +118,37 @@ namespace mbts.ui {
      public SolidColorBrush selection_highlight => _selection_highlight.Value;
      public IDialogCommand launch_settings_editor { get; }

-      public (GridSettings grid, IEnumerable<IPredicateAnimationsData<TRowData, TPredicateBuilder>> predicate_animations_data) create() {
-         // IMPORTANT: don't overwrite current sorting
-         _grid_settings.set(grid_settings.with(_columns.Select(c => c.create()), _rows_view.get_sorting_criteria(_columns)));
-         return (grid_settings, _predicate_animations_data);
+      public GridSettingsVM<TRowData, TPredicateBuilder, TSettingsData> create_vm(GridSettings settings, IObservable<string> title) {
+         var vm = new GridSettingsVM<TRowData, TPredicateBuilder, TSettingsData>(title, _bus, _orders_model, _create_predicate_vm, _create_column_predicate_vm, _create_settings_obj, _column_flags.ToDictionary(kv => kv.Key, kv => kv.Value.flags));
+         vm.load(_create_settings_obj(settings, _predicate_animations_data));
+         return vm;
      }

-      public void load_from((GridSettings grid, IEnumerable<IPredicateAnimationsData<TRowData, TPredicateBuilder>> predicate_animations_data) value) {
+      public TSettingsData create() {
+         // IMPORTANT: don't overwrite current sorting
+         _grid_settings.set(grid_settings.with(_columns.Select(c => {
+            var col_settings = c.create();
+            if (_column_flags.TryGetValue(c.id, out ImmutableColumnSettingStore store))
+               col_settings = store.apply(col_settings);
+            return col_settings;
+         }), _rows_view.get_sorting_criteria(_columns)));
+         return _create_settings_obj(grid_settings, _predicate_animations_data);
+      }
+
+      public void load_from(TSettingsData value) => _load_from_core(value, true);
+
+      void _load_from_core(TSettingsData value, bool reset_immutables) {
         Disposable.dispose(_notification_subs);
-         var grid = value.grid ?? GridSettings.Default;
+         var grid = value.general ?? GridSettings.Default;
         _grid_settings.set(grid);
         foreach (ColumnBase col in _columns)
            col.set_fallback_font_params(new FontFamily(grid.font_family), grid.font_size, grid.font_color.rgb_color(), grid.font_weight);
-         _rows_view.set_sort_descriptions(grid.sorting_criterion, _columns);
-         _predicate_animations_data = value.predicate_animations_data;
+         if (reset_immutables) {
+#pragma warning disable CS0612 // Type or member is obsolete
+            _rows_view.set_sort_descriptions(grid.sorting_criterion, _columns);
+#pragma warning restore CS0612 // Type or member is obsolete
+         }
+         _predicate_animations_data = value.predicate_animations;
         _animation_defs.clear();
         foreach (var pa in _predicate_animations_data) {
            var predicate = pa.predicate_builder.create_predicate(_arg);
@@ -140,6 +168,12 @@ namespace mbts.ui {
         // ** in the unfortunate event that we botch backwards compatability, and the columns don't bear a 1:1 relationship with the column-settings
         // don't add insult to injury by crashing **
         if (grid_settings.columns != null && _columns != null) {
+            if (reset_immutables) {
+               foreach (var kv in _column_flags) {
+                  if (grid.columns.TryGetFirst(c => c.id == kv.Key, out GridColumnSettings cs))
+                     kv.Value.store(cs);
+               }
+            }
            var col_settings_id_map = grid_settings.columns.ToDictionary(cs => id_key(cs.id));
            var columns_id_map = _columns.ToDictionary(c => id_key(c.id));
            if (col_settings_id_map.Count == columns_id_map.Count && col_settings_id_map.Count == grid_settings.columns.Count) {
@@ -159,5 +193,26 @@ namespace mbts.ui {
         IGridColumn<TRow> lookup_column(string col_id) =>
            _columns.OfType<IGridColumn<TRow>>().FirstOrDefault(c => string.Equals(col_id, c.id, StringComparison.CurrentCultureIgnoreCase));
      }
+
+      void IObserver<TSettingsData>.OnNext(TSettingsData sd) {
+         if (sd == null) return;
+         try {
+            var grid = sd.general;
+            if (grid.columns != null) {
+               var cols_with_applied_flags = grid.columns.ToList();
+               for (int i = 0; i < cols_with_applied_flags.Count; i++) {
+                  if (_column_flags.TryGetValue(cols_with_applied_flags[i].id, out ImmutableColumnSettingStore store)) {
+                     cols_with_applied_flags[i] = store.apply(cols_with_applied_flags[i]);
+                  }
+               }
+               sd = _create_settings_obj(grid.with(cols_with_applied_flags), sd.predicate_animations);
+            }
+            _load_from_core(sd, false);
+         } catch (Exception ex) {
+            Log.Ui.error($"Error loading GridSettings (as observer): {ex}");
+         }
+      }
+      void IObserver<TSettingsData>.OnError(Exception error) { }
+      void IObserver<TSettingsData>.OnCompleted() { }
   }
 }
@@ -1,5 +1,6 @@
 using bts.api;
 using bts.shell;
+using bts.utils;
 using mbts.collections;
 using mbts.collections.extensions;
 using mbts.ui;
@@ -18,14 +19,38 @@ using CellAnimation = mbts.ui.CellAnimation;
 using FontFamily = System.Windows.Media.FontFamily;

 namespace mbts.spark {
-   interface IGridSettingsFactory<TRowData, TPredicateBuilder> : IValueFactory<(GridSettings grid, IEnumerable<IPredicateAnimationsData<TRowData, TPredicateBuilder>> predicate_animations_data)>
-      where TPredicateBuilder : IPredicateBuilder<TRowData>, new() { }
+   interface IGridSettingsWithNotifications<TRowData, TPredicateBuilder> where TPredicateBuilder : IPredicateBuilder<TRowData> {
+      GridSettings general { get; }
+      IEnumerable<IPredicateAnimationsData<TRowData, TPredicateBuilder>> predicate_animations { get; }
+   }

-   partial class GridSettingsVM<TRowData, TPredicateBuilder> : DisposableViewModelBase, IGridSettingsFactory<TRowData, TPredicateBuilder>, IRequestViewClose
-      where TPredicateBuilder : IPredicateBuilder<TRowData>, new() {
+   class GridSettingsWithNotifications<TRowData, TPredicateBuilder> : IEquatable<GridSettingsWithNotifications<TRowData, TPredicateBuilder>> where TPredicateBuilder : IPredicateBuilder<TRowData> {
+      public readonly GridSettings grid;
+      public readonly IEnumerable<IPredicateAnimationsData<TRowData, TPredicateBuilder>> predicate_animations_data;
+      public GridSettingsWithNotifications(GridSettings grid, IEnumerable<IPredicateAnimationsData<TRowData, TPredicateBuilder>> predicate_animations_data) {
+         this.grid = grid;
+         this.predicate_animations_data = predicate_animations_data;
+      }
+
+      public bool Equals(GridSettingsWithNotifications<TRowData, TPredicateBuilder> other) =>
+         other != null &&
+         EqualityComparer.null_check_equals(grid, other.grid) &&
+         EqualityComparer.safe_sequence_equals(predicate_animations_data, other.predicate_animations_data);
+
+      public override bool Equals(object obj) => Equals(obj as GridSettingsWithNotifications<TRowData, TPredicateBuilder>);
+      public override int GetHashCode() =>
+         EqualityComparer.aggregate_hash(
+            EqualityComparer.safe_get_hash_code(grid),
+            EqualityComparer.safe_aggregate_hash(predicate_animations_data));
+   }
+
+   partial class GridSettingsVM<TRowData, TPredicateBuilder, TSettingsData> : DisposableViewModelBase, IRequestViewClose, IWindowSettingsVM<TSettingsData>, ITemplateSelectorKey 
+      where TPredicateBuilder : IPredicateBuilder<TRowData>, new()
+      where TSettingsData :class, IGridSettingsWithNotifications<TRowData, TPredicateBuilder> {
      //
      protected readonly Func<IPropertyWrapperVM<TPredicateBuilder>> _create_predicate_vm;
      protected readonly Func<string, IPropertyWrapperVM<TPredicateBuilder>> _create_column_predicate_vm;
+      readonly Func<GridSettings, IEnumerable<IPredicateAnimationsData<TRowData, TPredicateBuilder>>, TSettingsData> _create_settings_obj;
      readonly Property<IColumnVM> _current_column;
      readonly Property<FontFamily> _font_family;
      readonly Property<FontWeight> _font_weight;
@@ -33,16 +58,22 @@ namespace mbts.spark {
      readonly Property<double> _font_size;
      readonly Property<bool> _show_predicate_animations, _show_cell_predicate_animations;
      readonly OrdersModel _orders_model;
+      readonly IReadOnlyDictionary<string, GridColumnSettingsFeatureFlags> _column_flags;

      public GridSettingsVM(
         IObservable<string> owner_title, IBus bus, OrdersModel orders_model,
-         Func<IPropertyWrapperVM<TPredicateBuilder>> create_predicate_vm, Func<string, IPropertyWrapperVM<TPredicateBuilder>> create_column_predicate_vm) {
+         Func<IPropertyWrapperVM<TPredicateBuilder>> create_predicate_vm,
+         Func<string, IPropertyWrapperVM<TPredicateBuilder>> create_column_predicate_vm,
+         Func<GridSettings, IEnumerable<IPredicateAnimationsData<TRowData, TPredicateBuilder>>, TSettingsData> create_settings_obj,
+         IReadOnlyDictionary<string, GridColumnSettingsFeatureFlags> column_flags = null) {
         //
         _owner_title = backing(nameof(owner_title), owner_title);
         this.bus = bus;
         _orders_model = orders_model;
         _create_predicate_vm = create_predicate_vm;
         _create_column_predicate_vm = create_column_predicate_vm;
+         _create_settings_obj = create_settings_obj;
+         _column_flags = column_flags ?? new Dictionary<string, GridColumnSettingsFeatureFlags>();
         _font_family = backing(nameof(font_family), TextUtils.StandardFontFamily);
         _font_size = backing(nameof(font_size), FontSizes.Small);
         _font_weight = backing(nameof(font_weight), FontWeights.Normal);
@@ -68,6 +99,7 @@ namespace mbts.spark {
      public ColorPickerPopupVM font_color { get; } = new ColorPickerPopupVM();
      public ColorPickerPopupVM selection_highlight { get; } = new ColorPickerPopupVM();
      public double font_size { get => _font_size.Value; set => _font_size.set(value); }
+      public bool enable_sound_triggers => true;
      public bool show_predicate_animations { get => _show_predicate_animations.Value; set => _show_predicate_animations.set(value); }
      public bool show_cell_predicate_animations { get => _show_cell_predicate_animations.Value; set => _show_cell_predicate_animations.set(value); }
      public ObservableEditableCollection<PredicateRowAnimationVM> predicate_animations { get; }
@@ -80,7 +112,9 @@ namespace mbts.spark {
         new DialogSkirtItem("Apply", new DelegateCommand(() => committed?.Invoke()))
      };

-      public (GridSettings grid, IEnumerable<IPredicateAnimationsData<TRowData, TPredicateBuilder>> predicate_animations_data) create() {
+      public string key => ui.spark.GridOrLadderSettingsSelectorKeys.SimpleGrid;
+
+      public TSettingsData get_result() {
         var animation_map = predicate_animations
            .Select(p => p.create())
            .GroupBy(d => d.predicate)
@@ -94,22 +128,22 @@ namespace mbts.spark {
            foreach (IGrouping<TPredicateBuilder, CellAnimation> g in animations)
               animation_map.AddOrUpdate(g.Key, p => animation_tuple(c: g), (p, t) => t.cell_animations.AddRange(g));
         }
-         return (new GridSettings(font_family.name(), font_size, font_weight, font_color.color.rgb_color(), selection_highlight.to_proto(), col_settings),
+         return _create_settings_obj(new GridSettings(font_family.name(), font_size, font_weight, font_color.color.rgb_color(), selection_highlight.to_proto(), col_settings),
            animation_map.Select(kv => PredicateAnimations.create_data<TRowData, TPredicateBuilder>(kv.Key, kv.Value.cell_animations, kv.Value.row_animations, kv.Value.sounds)));
         //
         (List<RowAnimation> row_animations, List<SoundNotification> sounds, List<CellAnimation> cell_animations) animation_tuple(IEnumerable<RowAnimation> r = null, IEnumerable<SoundNotification> s = null, IGrouping<TPredicateBuilder, CellAnimation> c = null) =>
            (r?.ToList() ?? new List<RowAnimation>(), s?.ToList() ?? new List<SoundNotification>(), c?.ToList() ?? new List<CellAnimation>());
      }

-      public void load_from((GridSettings grid, IEnumerable<IPredicateAnimationsData<TRowData, TPredicateBuilder>> predicate_animations_data) value) {
-         _font_family.set(new FontFamily(value.grid.font_family));
-         _font_weight.set(value.grid.font_weight);
-         font_color.load_from(value.grid.font_color.rgb_solid_brush());
-         selection_highlight.load_from(value.grid.selection_highlight.to_brush());
-         _font_size.set(value.grid.font_size);
+      public void load(TSettingsData sd) {
+         _font_family.set(new FontFamily(sd.general.font_family));
+         _font_weight.set(sd.general.font_weight);
+         font_color.load_from(sd.general.font_color.rgb_solid_brush());
+         selection_highlight.load_from(sd.general.selection_highlight.to_brush());
+         _font_size.set(sd.general.font_size);
         var col_animations = new Dictionary<string, Dictionary<TPredicateBuilder, List<CellAnimation>>>();
         predicate_animations.Clear();
-         foreach (var pa in value.predicate_animations_data) {
+         foreach (var pa in sd.predicate_animations) {
            if (pa.row_animations.Count > 0 || pa.sound_notifications.Count > 0) {
               var vm = new PredicateRowAnimationVM(_create_predicate_vm());
               vm.load_from((pa.predicate_builder, pa.row_animations, pa.sound_notifications));
@@ -122,9 +156,14 @@ namespace mbts.spark {
            }
         }
         var curr_col_id = current_column?.id;
-         columns.SetItems(value.grid.columns.Select(col => {
+         columns.SetItems(sd.general.columns.Select(col => {
            var vm = new ColumnVM(this);
            vm.load_from((col, col_animations.GetValueOrDefault(col.id)?.ToFlatLookup(kv => kv.Key, kv => kv.Value)));
+            // reapply our favorite column flags
+            // this comes in handy when performing Load From Factory - the editor will contain
+            // a consistent view of what can be overridden and what cannot
+            if (_column_flags.TryGetValue(vm.id, out GridColumnSettingsFeatureFlags flags))
+               vm.apply_flags(flags);
            return vm;
         }));
         if (curr_col_id == null || !columns.TryGetFirst(c => c.id == curr_col_id, out IColumnVM curr_column))
@@ -342,9 +342,8 @@
          <ColumnDefinition Width="{Binding Source={StaticResource HorizontalSplit}}"/>
          <ColumnDefinition/>
        </Grid.ColumnDefinitions>
-        <!--TODO: enable when FontFamilies are ready-->
-        <TextBlock Foreground="{u:BTSColor disabled_text}">Font</TextBlock>
-        <Grid Grid.Column="2" IsEnabled="False" HorizontalAlignment="Left" Width="{StaticResource ControlLongWidth}">
+        <TextBlock>Font</TextBlock>
+        <Grid Grid.Column="2" HorizontalAlignment="Left" Width="{StaticResource ControlLongWidth}">
          <c:PopupControl HorizontalAlignment="Stretch" Header="{Binding}" HeaderTemplate="{StaticResource FontPickerPopupHeaderTemplate}" Background="{StaticResource ComboBox.Static.Background}">
            <c:FontPicker SelectedFontFamily="{Binding font_family}" SelectedFontSize="{Binding font_size}" SelectedFontWeight="{Binding font_weight}"/>
          </c:PopupControl>
@@ -359,6 +358,9 @@
      <GroupBox.Style>
        <Style TargetType="GroupBox" BasedOn="{StaticResource {x:Type GroupBox}}">
          <Style.Triggers>
+            <DataTrigger Binding="{Binding enable_sound_triggers}" Value="{u:False}">
+              <Setter Property="Visibility" Value="Collapsed"/>
+            </DataTrigger>
            <DataTrigger Binding="{Binding show_predicate_animations}" Value="{u:False}">
              <Setter Property="Height" Value="{StaticResource CollapsedAnimationItemsHeight}"/>
              <Setter Property="BorderThickness" Value="0"/>
@@ -16,6 +16,8 @@ namespace mbts.ui.spark {

      public static IMultiValueConverter ColumnDisplayNameVisibilityConverter =>
         ValueConverter.create<string, string, Visibility>((id, header) => id == header ? Visibility.Collapsed : Visibility.Visible);
+
+      public bool EnableSoundTriggers { get; set; }
   }

   static class PredicateTemplateKeys {
@@ -0,0 +1,72 @@
+using bts.proto;
+using mbts.spark;
+using mbts.ui.settings;
+using System.Collections.Generic;
+
+namespace mbts.ui {
+   abstract class ImmutableColumnSettingStore {
+      public readonly GridColumnSettingsFeatureFlags flags;
+
+      protected ImmutableColumnSettingStore(GridColumnSettingsFeatureFlags flags) =>
+         this.flags = flags;
+
+      public static ImmutableColumnSettingStore create(GridColumnSettingsFeatureFlags flags) {
+         var stores_per_flag = new List<ImmutableColumnSettingStore>();
+         if ((flags & GridColumnSettingsFeatureFlags.ImmutableFontColor) != 0) {
+            stores_per_flag.Add(new ImmutableFontColorOverrideStore());
+         }
+         if ((flags & GridColumnSettingsFeatureFlags.ImmutableFontWeight) != 0) {
+            stores_per_flag.Add(new ImmutableFontWeightOverrideStore());
+         }
+         return new CompositeImmutableSettingsStore(stores_per_flag, flags);
+      }
+
+      public abstract GridColumnSettings apply(GridColumnSettings settings);
+      public abstract void store(GridColumnSettings settings);
+
+      class ImmutableFontColorOverrideStore : ImmutableColumnSettingStore {
+         NullableColorProto _value;
+
+         public ImmutableFontColorOverrideStore()
+            : base(GridColumnSettingsFeatureFlags.ImmutableFontColor) { }
+
+         public override GridColumnSettings apply(GridColumnSettings settings) =>
+            settings.with(font_color_override: _value);
+
+         public override void store(GridColumnSettings settings) =>
+            _value = new NullableColorProto(settings.font_color_override);
+      }
+
+      class ImmutableFontWeightOverrideStore : ImmutableColumnSettingStore {
+         NullableFontWeightProto _value;
+
+         public ImmutableFontWeightOverrideStore()
+            : base(GridColumnSettingsFeatureFlags.ImmutableFontWeight) { }
+
+         public override GridColumnSettings apply(GridColumnSettings settings) =>
+            settings.with(font_weight_override: _value);
+
+         public override void store(GridColumnSettings settings) =>
+            _value = new NullableFontWeightProto(settings.font_weight_override);
+      }
+
+      class CompositeImmutableSettingsStore : ImmutableColumnSettingStore {
+         readonly IReadOnlyList<ImmutableColumnSettingStore> _stores;
+         public CompositeImmutableSettingsStore(IReadOnlyList<ImmutableColumnSettingStore> stores, GridColumnSettingsFeatureFlags flags)
+            : base(flags) => _stores = stores;
+
+         public override GridColumnSettings apply(GridColumnSettings settings) {
+            foreach (var s in _stores) {
+               settings = s.apply(settings);
+            }
+            return settings;
+         }
+
+         public override void store(GridColumnSettings settings) {
+            foreach (var s in _stores) {
+               s.store(settings);
+            }
+         }
+      }
+   }
+}
@@ -0,0 +1,92 @@
+using bts.proto;
+using mbts.ui.controls;
+using mbts.ui.settings;
+using mbts.ui.shell;
+using mbts.ui.utility;
+using System.Linq;
+using System.Reactive.Linq;
+using System.Windows;
+using System.Windows.Media;
+
+namespace mbts.spark {
+   partial class SimpleGridSettingsVM {
+      public class SimpleColumnVM : ViewModelBase, ISimpleColumnVM {
+         public readonly SimpleGridSettingsVM owner;
+
+         readonly Property<string> _id, _display_name;
+         readonly Property<double> _width;
+         readonly Property<HorizontalAlignment> _horizontal_alignment;
+         readonly Property<bool> _is_visible, _can_override_font_color, _is_font_color_overridden, _can_override_font_weight, _is_font_weight_overridden;
+         readonly Property<FontWeight> _font_weight_override;
+         GridColumnSettings _settings;
+
+         public SimpleColumnVM(SimpleGridSettingsVM owner) {
+            this.owner = owner;
+            _id = backing(nameof(id), string.Empty);
+            _display_name = backing(nameof(display_name), string.Empty);
+            _width = backing(nameof(width), 70.0);
+            _horizontal_alignment = backing(nameof(horizontal_alignment), HorizontalAlignment.Left);
+            _is_visible = backing(nameof(is_visible), false);
+            // font color override
+            _can_override_font_color = backing(nameof(can_override_font_color), true);
+            _is_font_color_overridden = backing(nameof(is_font_color_overridden), false);
+            // font weight override
+            _can_override_font_weight = backing(nameof(can_override_font_weight), true);
+            _is_font_weight_overridden = backing(nameof(is_font_weight_overridden), false);
+            _font_weight_override = backing(nameof(font_weight_override), FontWeights.Normal);
+         }
+
+         public string id => _id.Value;
+         public string display_name { get => _display_name.Value; set => _display_name.set(value); }
+         public double width { get => _width.Value; set => _width.set(value); }
+         public HorizontalAlignment horizontal_alignment { get => _horizontal_alignment.Value; set => _horizontal_alignment.set(value); }
+         public bool is_visible { get => _is_visible.Value; set => _is_visible.set(value); }
+         // font color override
+         public bool can_override_font_color => _can_override_font_color.Value;
+         public bool is_font_color_overridden { get => _is_font_color_overridden.Value; set => _is_font_color_overridden.set(value); }
+         public ColorPickerPopupVM font_color_override { get; } = new ColorPickerPopupVM();
+         // font weight override
+         public bool can_override_font_weight => _can_override_font_weight.Value;
+         public bool is_font_weight_overridden { get => _is_font_weight_overridden.Value; set => _is_font_weight_overridden.set(value); }
+         public FontWeight font_weight_override { get => _font_weight_override.Value; set => _font_weight_override.set(value); }
+
+         public GridColumnSettings create() =>
+            _settings.with(display_name, is_visible, null,
+               is_font_weight_overridden ? new NullableFontWeightProto(font_weight_override) : (NullableFontWeightProto?)null,
+               is_font_color_overridden ? new NullableColorProto(font_color_override.color) : (NullableColorProto?)null,
+               width,
+               horizontal_alignment);
+
+         public void load_from(GridColumnSettings value) {
+            _settings = value;
+            _id.set(_settings.id);
+            _display_name.set(_settings.display_name);
+            _width.set(_settings.width);
+            _horizontal_alignment.set(_settings.horizontal_alignment);
+            _is_visible.set(_settings.is_visible);
+            _is_font_weight_overridden.set(_settings.font_weight_override.HasValue);
+            _is_font_color_overridden.set(_settings.font_color_override.HasValue);
+            if (is_font_weight_overridden) {
+               _font_weight_override.set(_settings.font_weight_override.Value);
+            }
+            if (is_font_color_overridden) {
+               font_color_override.load_from(new SolidColorBrush(_settings.font_color_override.Value));
+            }
+         }
+
+         public void apply_flags(GridColumnSettingsFeatureFlags flags) {
+            var split_flags = EnumHelper.split_flags(flags).ToList();
+            // font color
+            _can_override_font_color.set(!split_flags.Contains(GridColumnSettingsFeatureFlags.ImmutableFontColor));
+            if (!can_override_font_color)
+               _is_font_color_overridden.set(false);
+            // font weight
+            _can_override_font_weight.set(!split_flags.Contains(GridColumnSettingsFeatureFlags.ImmutableFontWeight));
+            if (!can_override_font_weight)
+               _is_font_weight_overridden.set(false);
+         }
+
+         public override string ToString() => $"{display_name} ({id})";
+      }
+   }
+}
@@ -0,0 +1,113 @@
+<Window
+  x:Class="mbts.ui.spark.SimpleGridSettingsDialog"
+  xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+  xmlns:u="clr-namespace:mbts.ui"
+  xmlns:c="clr-namespace:mbts.ui.controls"
+  xmlns:cv="clr-namespace:mbts.ui.converters"
+  xmlns:usp="clr-namespace:mbts.ui.spark"
+  SizeToContent="WidthAndHeight"
+  Style="{StaticResource BTSDialog}"
+>
+  <Window.Resources>
+    <cv:BooleanToVisibilityConverter x:Key="DefaultTabVisibilityConverter" VisibilityForTrue="Visible" VisibilityForFalse="Hidden"/>
+    <cv:BooleanToVisibilityConverter x:Key="CustomTabVisibilityConverter" VisibilityForTrue="Hidden" VisibilityForFalse="Visible"/>
+    <cv:ValueMap x:Key="TabHeaderFontWeightConverter" Default="{u:FontWeight Normal}">
+      <cv:KeyValue Key="{u:True}" Value="{u:FontWeight Bold}"/>
+    </cv:ValueMap>
+    <Style TargetType="RadioButton">
+      <Setter Property="BorderBrush" Value="{StaticResource ComboBox.Static.Border}"/>
+      <Setter Property="BorderThickness" Value="1"/>
+      <Setter Property="Background" Value="{StaticResource ComboBox.Static.Background}"/>
+      <Setter Property="Padding" Value="6,3"/>
+      <Setter Property="VerticalAlignment" Value="Bottom"/>
+      <Setter Property="Template">
+        <Setter.Value>
+          <ControlTemplate TargetType="RadioButton">
+            <Border
+              Background="{TemplateBinding Background}"
+              BorderBrush="{TemplateBinding BorderBrush}"
+              BorderThickness="{TemplateBinding BorderThickness}"
+              Padding="{TemplateBinding Padding}"
+            >
+              <ContentPresenter/>
+            </Border>
+            <ControlTemplate.Triggers>
+              <Trigger Property="IsChecked" Value="True">
+                <Setter Property="Background" Value="Transparent"/>
+                <Setter Property="Padding" Value="6,4,6,6"/>
+                <Setter Property="BorderThickness" Value="1,1,1,0"/>
+              </Trigger>
+              <MultiTrigger>
+                <MultiTrigger.Conditions>
+                  <Condition Property="IsMouseOver" Value="True"/>
+                  <Condition Property="IsChecked" Value="False"/>
+                </MultiTrigger.Conditions>
+                <Setter Property="Background" Value="{u:BTSColor UI.Button.mouseover_background}"/>
+              </MultiTrigger>
+              <Trigger Property="IsEnabled" Value="False">
+                <Setter Property="Foreground" Value="{u:BTSColor UI.Button.disabled_foreground}"/>
+              </Trigger>
+            </ControlTemplate.Triggers>
+          </ControlTemplate>
+        </Setter.Value>
+      </Setter>
+    </Style> 
+    <u:KeyedStyleSelector x:Key="LeftButtonStyleSelector">
+      <u:StyleSelectorKeyValue Key="{x:Static usp:SimpleGridSettingsDialog.ResetToFactoryKey}">
+        <Style TargetType="Button" BasedOn="{StaticResource DialogSkirtButtonStyle}">
+          <Setter Property="Width" Value="94"/>
+        </Style>
+      </u:StyleSelectorKeyValue>
+      <u:StyleSelectorKeyValue Key="{x:Static usp:SimpleGridSettingsDialog.CopyFromOtherKey}">
+        <Style TargetType="Button" BasedOn="{StaticResource DialogSkirtButtonStyle}">
+          <Setter Property="Width" Value="108"/>
+        </Style>
+      </u:StyleSelectorKeyValue>
+    </u:KeyedStyleSelector>
+    <u:KeyedTemplateSelector x:Key="GridOrLadderSettingsSelector">
+      <u:TemplateSelectorKeyValue Key="{x:Static usp:GridOrLadderSettingsSelectorKeys.SimpleGrid}">
+        <DataTemplate>
+          <usp:GridSettingsView />
+        </DataTemplate>
+      </u:TemplateSelectorKeyValue>
+      <u:TemplateSelectorKeyValue Key="{x:Static usp:GridOrLadderSettingsSelectorKeys.Ladder}">
+        <DataTemplate>
+          <usp:LadderSettingsView />
+        </DataTemplate>
+      </u:TemplateSelectorKeyValue>
+    </u:KeyedTemplateSelector>
+  </Window.Resources>
+  <Grid>
+    <Grid.RowDefinitions>
+      <RowDefinition Height="Auto"/>
+      <RowDefinition Height="1"/>
+      <RowDefinition Height="Auto"/>
+      <RowDefinition/>
+    </Grid.RowDefinitions>
+    <c:ActionMenu HorizontalAlignment="Right" ItemsSource="{Binding action_menu_items}"/>
+    <ContentControl Grid.Row="2" 
+                    Margin="8"
+                    VerticalAlignment="Top"
+                    Content="{Binding instance_vm}" 
+                    ContentTemplateSelector="{StaticResource GridOrLadderSettingsSelector}"
+    />
+    <c:DialogSkirt
+      Grid.Row="3"
+      BorderThickness="1"
+      BorderBrush="DarkGray"
+      LeftItems="{Binding left_skirt_items}"
+      LeftItemContainerStyleSelector="{StaticResource LeftButtonStyleSelector}"
+      RightItems="{Binding right_skirt_items}"
+    >
+      <c:DialogSkirt.Background>
+        <LinearGradientBrush StartPoint="0,0" EndPoint="1,0">
+          <LinearGradientBrush.GradientStops>
+            <GradientStop Color="Transparent"/>
+            <GradientStop Color="{x:Static u:BTSColors.dialog_skirt}" Offset="1"/>
+          </LinearGradientBrush.GradientStops>
+        </LinearGradientBrush>
+      </c:DialogSkirt.Background>
+    </c:DialogSkirt>
+  </Grid>
+</Window>
@@ -0,0 +1,19 @@
+using System.Windows;
+
+namespace mbts.ui.spark {
+   /// <summary>
+   /// Interaction logic for SimpleGridSettingsDialog.xaml
+   /// </summary>
+   public partial class SimpleGridSettingsDialog : Window {
+      public SimpleGridSettingsDialog() =>
+         InitializeComponent();
+
+      public const string ResetToFactoryKey = "Reset", CopyFromOtherKey = "Copy";
+   }
+
+   static class GridOrLadderSettingsSelectorKeys {
+      public const string
+         SimpleGrid = nameof(SimpleGrid),
+         Ladder = nameof(Ladder);
+   }
+}
@@ -0,0 +1,121 @@
+using mbts.spark;
+using mbts.ui.settings;
+using mbts.ui.shell;
+using mbts.utils;
+using System;
+using System.Collections.Generic;
+using System.Collections.ObjectModel;
+using System.Linq;
+using System.Reactive.Linq;
+using System.Windows;
+using System.Windows.Media;
+using static mbts.ui.controls.DIYGrid;
+
+namespace mbts.ui {
+   class SimpleGridSettingsManager<TRow> : ViewModelBase, IObserver<GridSettings> {
+      readonly ObservableCollection<ColumnBase> _columns;
+      readonly IReadOnlyCollection<IRowVM> _row_vms;
+      readonly Property<GridSettings> _grid_settings;
+      readonly DelegateProperty<FontFamily> _font_family;
+      readonly DelegateProperty<FontWeight> _font_weight;
+      readonly DelegateProperty<double> _font_size;
+      readonly DelegateProperty<SolidColorBrush> _font_color, _selection_highlight;
+      readonly IReadOnlyDictionary<string, ImmutableColumnSettingStore> _column_flags;
+
+      public SimpleGridSettingsManager(ObservableCollection<ColumnBase> columns)
+         : this(columns, new Dictionary<string, GridColumnSettingsFeatureFlags>(), null) { }
+
+      public SimpleGridSettingsManager(ObservableCollection<ColumnBase> columns, IReadOnlyDictionary<string, GridColumnSettingsFeatureFlags> column_flags, IReadOnlyCollection<IRowVM> row_vms) {
+         _columns = columns;
+         _column_flags = column_flags.ToDictionary(kv => kv.Key, kv => ImmutableColumnSettingStore.create(kv.Value));
+         _grid_settings = backing(nameof(grid_settings), GridSettings.Default);
+         _font_family = backing(nameof(font_family), () => new FontFamily(grid_settings.font_family), nameof(grid_settings));
+         _font_weight = backing(nameof(font_weight), () => grid_settings.font_weight, nameof(grid_settings));
+         _font_size = backing(nameof(font_size), () => grid_settings.font_size, nameof(font_size));
+         _font_color = backing(nameof(font_color), () => grid_settings.font_color.rgb_solid_brush().frozen(), nameof(grid_settings));
+         _selection_highlight = backing(nameof(selection_highlight), () => grid_settings.selection_highlight.to_brush().frozen(), nameof(grid_settings));
+         _row_vms = row_vms;
+      }
+
+      public GridSettings grid_settings => _grid_settings.Value;
+      public FontFamily font_family => _font_family.Value;
+      public FontWeight font_weight => _font_weight.Value;
+      public double font_size => _font_size.Value;
+      public SolidColorBrush font_color => _font_color.Value;
+      public SolidColorBrush selection_highlight => _selection_highlight.Value;
+
+      public SimpleGridSettingsVM create_vm(GridSettings settings, IObservable<string> title) {
+         var vm = new SimpleGridSettingsVM(title, _column_flags.ToDictionary(kv => kv.Key, kv => kv.Value.flags));
+         vm.load_from(settings);
+         return vm;
+      }
+
+      public GridSettings create() {
+         // IMPORTANT: don't overwrite current sorting
+         _grid_settings.set(grid_settings.with(_columns.Select(c => {
+            var col_settings = c.create();
+            if (_column_flags.TryGetValue(c.id, out ImmutableColumnSettingStore store))
+               col_settings = store.apply(col_settings);
+            return col_settings;
+         })));
+         return grid_settings;
+      }
+
+      /// <summary>
+      /// This will overwrite the columns' immutable-value store (unlike the IObserver&lt;<see cref="GridSettings"/>&gt; 'OnNext' implementation)
+      /// </summary>
+      public void load_from(GridSettings grid) => _load_from_core(grid, true);
+
+      void IObserver<GridSettings>.OnCompleted() { }
+      void IObserver<GridSettings>.OnError(Exception error) { }
+      void IObserver<GridSettings>.OnNext(GridSettings grid) {
+         if (grid.columns != null) {
+            var cols_with_applied_flags = grid.columns.ToList();
+            for (int i = 0; i < cols_with_applied_flags.Count; i++) {
+               if (_column_flags.TryGetValue(cols_with_applied_flags[i].id, out ImmutableColumnSettingStore store)) {
+                  cols_with_applied_flags[i] = store.apply(cols_with_applied_flags[i]);
+               }
+            }
+            grid = grid.with(cols_with_applied_flags);
+         }
+         _load_from_core(grid, false);
+      }
+
+      void _load_from_core(GridSettings grid, bool reset_immutable_flag_stores) {
+         grid = grid ?? GridSettings.Default;
+         _grid_settings.set(grid);
+         foreach (ColumnBase col in _columns)
+            col.set_fallback_font_params(new FontFamily(grid.font_family), grid.font_size, grid.font_color.rgb_color(), grid.font_weight);
+         // ** in the unfortunate event that we botch backwards compatability, and the columns don't bear a 1:1 relationship with the column-settings
+         // don't add insult to injury by crashing **
+         if (grid_settings.columns != null) {
+            if (reset_immutable_flag_stores) {
+               foreach (var kv in _column_flags) {
+                  if (grid.columns.TryGetFirst(c => c.id == kv.Key, out GridColumnSettings cs))
+                     kv.Value.store(cs);
+               }
+            }
+            if (_columns != null) {
+               var col_settings_id_map = grid_settings.columns.ToDictionary(cs => id_key(cs.id));
+               var columns_id_map = _columns.ToDictionary(c => id_key(c.id));
+               if (col_settings_id_map.Count == columns_id_map.Count && col_settings_id_map.Count == grid_settings.columns.Count) {
+                  CollectionHelper.sync_with_never_duplicate(_columns, grid_settings.columns, cs => {
+                     throw new InvalidOperationException();
+                  }, c => id_key(c.id), cs => id_key(cs.id));
+               }
+               // ** don't assume that columns:column_settings have a perfect 1:1 relationship (they should, but it is possible we accidentally break the settings as grids/uis change) **
+               foreach (var col in _columns) {
+                  if (col_settings_id_map.TryGetValue(id_key(col.id), out GridColumnSettings cs))
+                     col.load_from(cs);
+               }
+            }
+            // invalidate all the rows to draw them again to reflect the latest settings
+            if (_row_vms != null)
+               foreach (var r in _row_vms) r.raise_invalidated();
+
+            //
+            string id_key(string id) => id.ToLower();
+         }
+      }
+   }
+}
@@ -0,0 +1,102 @@
+using mbts.ui;
+using mbts.ui.controls;
+using mbts.ui.settings;
+using mbts.ui.shell;
+using mbts.ui.utility.text;
+using System;
+using System.Collections.Generic;
+using System.Collections.ObjectModel;
+using System.Linq;
+using System.Reactive.Linq;
+using System.Windows;
+using FontFamily = System.Windows.Media.FontFamily;
+
+namespace mbts.spark {
+   interface ISimpleColumnVM : IValueFactory<GridColumnSettings> {
+      string id { get; }
+      string display_name { get; set; }
+      double width { get; set; }
+      bool is_visible { get; set; }
+      bool is_font_color_overridden { get; set; }
+      ColorPickerPopupVM font_color_override { get; }
+      bool is_font_weight_overridden { get; set; }
+      FontWeight font_weight_override { get; set; }
+      void apply_flags(GridColumnSettingsFeatureFlags flags);
+   }
+
+   partial class SimpleGridSettingsVM : DisposableViewModelBase, IValueFactory<GridSettings>, IWindowSettingsVM<GridSettings>, ITemplateSelectorKey {
+      readonly Property<ISimpleColumnVM> _current_column;
+      readonly Property<FontFamily> _font_family;
+      readonly Property<FontWeight> _font_weight;
+      readonly Property<string> _font_display_name, _owner_title;
+      readonly Property<double> _font_size;
+      readonly Property<bool> _show_predicate_animations, _show_cell_predicate_animations;
+      readonly IReadOnlyDictionary<string, GridColumnSettingsFeatureFlags> _column_flags;
+
+      public SimpleGridSettingsVM(IObservable<string> owner_title, IReadOnlyDictionary<string, GridColumnSettingsFeatureFlags> column_flags = null) {
+         _column_flags = column_flags ?? new Dictionary<string, GridColumnSettingsFeatureFlags>();
+         _owner_title = backing(nameof(owner_title), owner_title);
+         _font_family = backing(nameof(font_family), TextUtils.StandardFontFamily);
+         _font_size = backing(nameof(font_size), FontSizes.Small);
+         _font_weight = backing(nameof(font_weight), FontWeights.Normal);
+         _font_display_name = backing(nameof(font_display_name), () => TextUtils.display_name(font_family, font_size), nameof(font_family), nameof(font_size));
+         _show_predicate_animations = backing(nameof(show_predicate_animations), true);
+         _show_cell_predicate_animations = backing(nameof(show_cell_predicate_animations), true);
+         _current_column = backing<ISimpleColumnVM>(nameof(current_column));
+      }
+
+      public event EventHandler RequestClose;
+      public event Action committed;
+
+      public string owner_title => _owner_title.Value;
+      public ObservableCollection<ISimpleColumnVM> columns { get; } = new ObservableCollection<ISimpleColumnVM>();
+      public ISimpleColumnVM current_column { get => _current_column.Value; set => _current_column.set(value); }
+      public string font_display_name => _font_display_name.Value;
+      public FontFamily font_family { get => _font_family.Value; set => _font_family.set(value); }
+      public FontWeight font_weight { get => _font_weight.Value; set => _font_weight.set(value); }
+      public ColorPickerPopupVM font_color { get; } = new ColorPickerPopupVM();
+      public ColorPickerPopupVM selection_highlight { get; } = new ColorPickerPopupVM();
+      public double font_size { get => _font_size.Value; set => _font_size.set(value); }
+      public bool enable_sound_triggers => false;
+      public bool show_predicate_animations { get => _show_predicate_animations.Value; set => _show_predicate_animations.set(value); }
+      public bool show_cell_predicate_animations { get => _show_cell_predicate_animations.Value; set => _show_cell_predicate_animations.set(value); }
+      public IReadOnlyList<DialogSkirtItem> dialog_skirt_items => new[] {
+         new DialogSkirtItem("OK", new DelegateCommand(() => {
+            committed?.Invoke();
+            RequestClose?.Invoke(this, new EventArgs());
+         })) { is_default = true },
+         new DialogSkirtItem("Cancel", new DelegateCommand(() => RequestClose?.Invoke(this, new EventArgs()))) { is_cancel = true },
+         new DialogSkirtItem("Apply", new DelegateCommand(() => committed?.Invoke()))
+      };
+
+      public string key => ui.spark.GridOrLadderSettingsSelectorKeys.SimpleGrid;
+
+      public GridSettings create() =>
+         new GridSettings(font_family.name(), font_size, font_weight, font_color.color.rgb_color(), selection_highlight.to_proto(), columns.Select(c => c.create()));
+
+      public void load_from(GridSettings value) {
+         _font_family.set(new FontFamily(value.font_family));
+         _font_weight.set(value.font_weight);
+         font_color.load_from(value.font_color.rgb_solid_brush());
+         selection_highlight.load_from(value.selection_highlight.to_brush());
+         _font_size.set(value.font_size);
+         var curr_col_id = current_column?.id;
+         columns.SetItems(value.columns.Select(col => {
+            var vm = new SimpleColumnVM(this);
+            vm.load_from(col);
+            // reapply our favorite column flags
+            // this comes in handy when performing Load From Factory - the editor will contain
+            // a consistent view of what can be overridden and what cannot
+            if (_column_flags.TryGetValue(vm.id, out GridColumnSettingsFeatureFlags flags))
+               vm.apply_flags(flags);
+            return vm;
+         }));
+         if (curr_col_id == null || !columns.TryGetFirst(c => c.id == curr_col_id, out ISimpleColumnVM curr_column))
+            curr_column = columns.FirstOrDefault();
+         _current_column.set(curr_column);
+      }
+
+      void IWindowSettingsVM<GridSettings>.load(GridSettings value) => load_from(value);
+      GridSettings IWindowSettingsVM<GridSettings>.get_result() => create();
+   }
+}