title: ContentControl's formatting leaks outside control
body: <p>I'm developing application level add-in plugin to Word 2007. Unlucky I've encountered minor problem with styling dynamically added content:</p>
  
  <p>I've created Content control, and changed it's style with following code:</p>
  
  <pre><code>PlainTextContentControl plainTextControl =
     extendedDocument.Controls.AddPlainTextContentControl(
     currentDocument.ActiveWindow.Selection.Range,"ptcc1");
  
  plainTextControl.Text = "hello world";
  
  plainTextControl.Range.Font.Shading.BackgroundPatternColor = (WdColor)ColorTranslator.ToOle(Color.LightGray);
  plainTextControl.Range.Borders.Enable = (int)WdLineStyle.wdLineStyleSingle;
  plainTextControl.LockContents = true;
  </code></pre>
  
  <p>It works - inserted text control has border and gray background, but when i type text just after inserted element this style persist - newly typed characters are bordered and with background color as well. How to limit formatting changes to ContentControl only?</p>