title: Duplicate vim buffer
body: <p>I would like to duplicate the current buffer, which will act the same way only that I will use the rtl command on it:</p>
  
  <p><code>
  :set rightleft
  </code>
  Except that the buffers will be the same, if I scroll down in the original one the second will scroll too and etc.  </p>
  
  <p>Is it possible in vim without any plugins?</p>