<article>
  <front>
    <article-meta>
      <title-group>
        <article-title>Commonmark.org help</article-title>
      </title-group>
    </article-meta>
  </front>
  <article-body>
    <p><i>Italic</i></p>
    <p><b>Bold</b></p>
    <section id="heading-1">
      <h2>Heading 1</h2>
      <section id="heading-2">
        <h3>Heading 2</h3>
        <p><a rel="external" href="http://a.com">Link</a></p>
        <blockquote>
          <p>Blockquote</p>
        </blockquote>
        <ul>
          <li>
            <p>List</p>
          </li>
          <li>
            <p>List</p>
          </li>
          <li>
            <p>List</p>
          </li>
        </ul>
        <ol>
          <li>
            <p>One</p>
          </li>
          <li>
            <p>Two</p>
          </li>
          <li>
            <p>Three</p>
          </li>
        </ol>
        <p><tt>Inline code</tt> with backticks</p>
        <pre># code block
print '3 backticks or'
print 'indent 4 spaces'</pre>
      </section>
    </section>
  </article-body>
</article>
