ading Level 4&lt;/h4&gt;
&lt;h5&gt;Heading Level 5&lt;/h5&gt;
&lt;h6&gt;Heading Level 6&lt;/h6&gt;
&lt;hgroup&gt;
  &lt;h2&gt;Heading level 2 within hgroup&lt;/h2&gt;
  &lt;h3&gt;Heading level 3 within hgroup&lt;/h3&gt;
&lt;/hgroup&gt;</code></pre>
  </details>
</section>