title: list item with asterix
body: <p>is it possible to increment asterixes in a ordered list ? So if I have something like</p>
  
  <pre><code>&lt;ol class="ast"&gt;
  &lt;li&gt;item 1&lt;/li&gt; 
  &lt;li&gt;item 2&lt;/li&gt; 
  &lt;li&gt;item 3&lt;/li&gt; 
  &lt;/ol&gt;
  </code></pre>
  
  <p>that would show up on my page as follows</p>
  
  <p>*&nbsp;&nbsp;&nbsp;item 1<br/>
  **&nbsp;&nbsp;item 2<br/>
  *** item 3</p>
  
  <p>using css ?</p>