title: XAML: Is there a way to style TreeViewItem header property to contain multiple font styles?
body: <p>I need to create a TreeView type controller that will display rich text. </p>
  
  <p>Example:</p>
  
  <p>&raquo; <strong>Signed</strong> by <em>Person Name </em></p>
  
  <p>&raquo; <strong>Certified</strong> by <em>Person Name </em></p>
  
  <p>Content of the TreeViewItem is easy as I can simply put TextBlock inside, but header don't allow for multiple font style declarations. </p>
  
  <p>I'm really a beginner in XAML and I work in ExpressionBlend (although I don't shy away from coding). I would really appreciate if someone push me into right direction.</p>