Document CompletionWindow.StartOffset and EndOffset.

git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/trunk@4031 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61

src/Libraries/AvalonEdit/ICSharpCode.AvalonEdit/CodeCompletion/CompletionWindow.cs

@@ -89,6 +89,7 @@ namespace ICSharpCode.AvalonEdit.CodeCompletion
 		
 		/// <summary>
 		/// Gets/Sets the start offset of the edited text portion.
+		/// This text portion is used to determine the text used to select an entry in the completion list by typing.
 		/// </summary>
 		public int StartOffset {
 			get { return startOffset; }
@@ -97,6 +98,7 @@ namespace ICSharpCode.AvalonEdit.CodeCompletion
 		
 		/// <summary>
 		/// Gets/Sets the end offset of the edited text portion.
+		/// This text portion is used to determine the text used to select an entry in the completion list by typing.
 		/// </summary>
 		public int EndOffset {
 			get { return endOffset; }

src/Libraries/AvalonEdit/ICSharpCode.AvalonEdit/CodeCompletion/ICompletionData.cs

@@ -42,7 +42,7 @@ namespace ICSharpCode.AvalonEdit.CodeCompletion
 		/// </summary>
 		/// <param name="textArea">The text area on which completion is performed.</param>
 		/// <param name="completionSegment">The text segment that was used by the completion window if
-		/// the user types.</param>
+		/// the user types (segment between CompletionWindow.StartOffset and CompletionWindow.EndOffset).</param>
 		/// <param name="insertionRequestEventArgs">The EventArgs used for the insertion request.
 		/// These can be TextCompositionEventArgs, KeyEventArgs, MouseEventArgs, depending on how
 		/// the insertion was triggered.</param>