Text formatting commands:
<ul>
    <li><tt>*text*</tt> - displays as <i>italics</i></li>
    <li><tt>**text**</tt> - displays as <b>bold</b></li>
    <li><tt>***text***</tt> - displays as <b><i>bold italics</i></b></li>
    <li><tt>__text__</tt> - displays as an <u>underline</u></li>
    <li><tt>[text](url)</tt> - displays as a <a href="#">hyperlink</a></li>
    <li><tt>![text](url)</tt> - displays as an image</li>
    <li><tt>```text```</tt> - displays as a code block (new lines allowed between the backticks)</li>
</ul>
<pre><code> like this</code></pre>
<ul>
    <li><tt>`text`</tt> - displays as <code>inline code</code></li>
    <li><tt>&gt; text</tt> - displays as a blockquote (note the space after &gt;)</li>
    <blockquote>like this</blockquote>
    <li><tt># text</tt> - displays as a large header (note the space)</li>
    <h1>like this</h1>
    <li><tt>## text</tt> - displays as a medium header (note the space)</li>
    <h2>like this</h2>
    <li><tt>### text</tt> - displays as a small header (note the space)</li>
    <h3>like this</h3>
    <li><tt>$$ text $$</tt> - renders a LaTeX formula (if enabled)</li>
    <li><tt>$ text $</tt> - renders an AsciiMath formula (if enabled)</li>
</ul>