title: How can I select multiple text segments in a WPF textbox?
body: <p>Is it possible to select multiple parts of text within a WPF textbox? For instance, for a textbox that contains the string <code>THIS IS A TEST</code>, I want to be able to highlight <code>THIS</code>, then hold Ctrl and highlight <code>TEST</code> without unselecting <code>THIS</code>.</p>
  
  <p>For a visual clue about what I'm aiming at, see <a href="http://lifehacker.com/396379/select-multiple-lines-of-text-in-firefox-3" rel="nofollow noreferrer">this</a> article about the feature in Firefox.</p>
  
  <p>If by default there is no way to accomplish this, I would like to know if there is any  third-party control implemented in WPF that does.</p>