title: How change short keys in Vim?
body: <p>I am a new user in Vim. How change these keys in <a href="http://en.wikipedia.org/wiki/Zen_Coding" rel="nofollow">Zen Coding</a>,</p>
  
  <p><kbd>ctr</kbd>+<kbd>y</kbd>+<kbd>,</kbd></p>
  
  <p>To</p>
  
  <p><kbd>ctr</kbd>+<kbd>e</kbd></p>
  
  <hr>
  
  <p>And also change in omni,</p>
  
  <p><kbd>ctr</kbd>+<kbd>x</kbd> <kbd>ctr</kbd>+<kbd>o</kbd></p>
  
  <p>To</p>
  
  <p><kbd>ctr</kbd>+<kbd>j</kbd></p>
  
  <p>How can I do that?</p>