<html>
  <head></head>
  <body>
    <ul>
      <li>Zero</li>
      <li>Four</li>
    </ul>
  </body>
</html>

text/html
---------

<ul><li>
    <ol>
     <li>One</li>
      <li>Two</li>
      <li>Three</li>
    </ol>
  </li></ul>

text/plain
----------

  - 1.  One
    2.  Two
    3.  Three