LaTeX_Special HTML_Special Mixed_Content
Dollars $ <br> $100 & <b>bold</b>
Percent % <sup>4</sup> 50% & <i>italic</i>
Underscore _ <emph>blah</emph> user_name & <code>code</code>
Backslash \ &amp; $100 & <b>bold</b>
Hash # &lt; 50% & <i>italic</i>
Ampersand & &gt; user_name & <code>code</code>