Customizing code completion on Sublime-text 2

Question

In Sublime-Text 2 when for instance in HTML5 I type:

"ul" and then the TAB key

The software show the following autocomplete code

<ul id="" class="">
<li><a href="" title=""></a></li>
li
 </ul><!-- / -->

I want to clean that code and customize it, I know is possible, anyone knows where can I edit this ?

Thanks !

Answer 1

http://sublimetext.info/docs/en/extensibility/completions.html