             <li>strings</li>
            </ul>
          </li>
      </ul>
    </div>

      
      <br>

      <section class="visible-xs visible-sm hidden-md">
          <h3>Contents</h3>
  
  
  
  
  
  
  
  
  
  
      <div class="panel panel-primary">
      <div class="panel-heading text-left">
        <h3 class="panel-title">
          <a data-toggle="collapse" href="#types-1">Derived Types</a>
        </h3>
      </div>
      <div id="types-1" class="panel-collapse collapse">
        <div class="