title: Rich Text Box how to highlight text block
body: <p>I need a certain portion of my text in RTB to be highlighted not in the sense of changing the font style/color, but in the sense of making a block selection with a particular color. This is similar to how Visual Studio highlights a line during debug mode.</p>
  
  <p>How can I accomplish this feature using RTB or rather, is it even possible? If it isn't possible, I'd like to hear another way of performing the above task.</p>