title: Rich Text Format Tags for Hiding and Un-hiding
body: <p>I would like to hide part of the text in my RichTextBox. I know that \v is the start of a hiding section. But how do I unhide ? For example if I want to hide the word "big" in the string "hello big world" so that "hello  world" is visible:</p>
  
  <hr>
  
  <pre><code>text              : "hello big world"
  RTF so far        : "hello \v big world"
  result            : "hello "
  wanted result  -&gt; : "hello  world"
  doesn't work      : "hello \v big\v  world"
  </code></pre>
  
  <p><hr>
  Is there a way ?</p>