This doesn't actually work.

public/scripts/templates/formatting.html

@@ -7,10 +7,6 @@ Text formatting commands:
     <li><tt>~~text~~</tt> - displays as <s>strikethrough</s></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 <sup>superscript</sup></li>
-    <li><tt>,,text,,</tt> - displays as a <sub>subscript</sub></li>
-    <li><tt>^^text^^</tt> - displays as a <mark>highlight</mark></li>
-    <li><tt>==text==</tt> - displays as <kbd>monospace</kbd></li>
     <li><tt>```text```</tt> - displays as a code block (new lines allowed between the backticks)</li>
 </ul>
 <pre><code> like this</code></pre>