n> <span class="s">&#39;undo&#39;</span><span class="p">,</span> <span class="nx">@state</span>
    <span class="nx">@synchronize</span><span class="p">()</span>
    <span class="nx">@undos</span><span class="p">.</span><span class="nx">length</span></pre></div>             </td>           </tr>                               <tr id="section-5">             <td class="docs">               <div class="pilwrap">                 <a class="pilcrow" href="#section-5">&#182;</a>               </div>               