migrate doc to wwwroot.

Disp/DemoPick2.cs

@@ -5,6 +5,11 @@ using Hi.Coloring;
 
 namespace Sample.Disp
 {
+    /// <summary>
+    /// Demonstrates advanced object picking with multiple pickable objects.
+    /// Shows how to create and manage multiple pickable objects with different visual appearances.
+    /// Implements proper resource cleanup through the IDisposable interface.
+    /// </summary>
     /// <remarks>
     /// ### Source Code
     /// [!code-csharp[SampleCode](~/../Hi.Sample.Wpf/Disp/DemoPick2.cs)]
@@ -59,7 +64,13 @@ namespace Sample.Disp
 			Dispose(true);
 		}
 		#endregion
-		public static void Main()
+		
+		/// <summary>
+		/// Entry point for the DemoPick2 example.
+		/// Creates and displays multiple pickable objects with distinct colors and positions.
+		/// Demonstrates separation of picking behavior from visual representation.
+		/// </summary>
+		static void Main()
 		{
             DemoUtil.RunApplication("DemoPick2", new DemoPick2());
 		}