title: Efficient to apply Run-Length Transform after Move to Front Transform and BWT?
body: <p>I'm new to encoding so I'm trying to understand the basics. I came across a document that was describing a lossless text compression technique, and in this document was a figure that illustrated how their compression works. It works like so:</p>
  
  <pre><code>Source -&gt; BWT -&gt; MTF -&gt; RLT -&gt; Proprietary Entropy Encoder
  </code></pre>
  
  <p>I don't understand why they would use Run-Length Transform after Move to Front Transform, it  doesn't seem efficient to me. As I understand it, MTF does not produce many runs itself and therefore it would not be useful to use RLT afterwords.</p>
  
  <p>Some explanation would be much appreciated!</p>