<h2><span class="markdown">A plain header</span></h2>
<p>Let's first have a plain header</p>
<h1>An underlined header</h1>
<p>(That's also useful)</p>
<h1>A header with a <a href="http://www.link.com">link</a></h1>
<p>First with a hash</p>
<h2>Another with a <a href="http://www.link.com/">link</a></h2>
<p>This time underlined</p>