title: How to customize pointer lock controls in three.js?
body: <p>Based on the pointer lock controls example <br>
  <a href="http://pages.cs.wisc.edu/~lizy/mrdoob-three.js-ef5f05d/examples/misc_controls_pointerlock.html" rel="nofollow">http://pages.cs.wisc.edu/~lizy/mrdoob-three.js-ef5f05d/examples/misc_controls_pointerlock.html</a></p>
  
  <p>How can this example be modified so that we can go up and down using keys and zoom in and zoom out using the mouse wheel or keys?</p>
  
  <p>Any other tips on customizing the pointer lock controls are welcome as well.</p>