title: Changing the size of the split screen in vimdiff
body: <p>I only know two commands for dealing with vimdiff:</p>
  
  <p><code>Ctrl-w Ctrl-w</code> switches windows and <code>Ctrl-w =</code> makes the two windows equal width if they became uneven due to, for example, resizing the terminal.</p>
  
  <p>How can I make the left screen much larger than the right, for instance?</p>