_emphasis_ -> <em>emphasis</em>
__italic__ -> <i>italic</i>
*strong* -> <strong>strong</strong>
**bold** -> <b>bold</b>
??citation?? -> <cite>citation</cite>
-deleted text- -> <del>deleted</del>
+inserted text+ -> <ins>inserted</ins>
^superscript^ -> <sup>superscript</sup>
~subscript~ -> <sub>subscript</sub>
@code@ -> <code>computer code</code>
%(bob)span% -> <span class="bob">span</span>
==notextile== -> leave text alone (do not format)
"linktext":url -> <a href="url">linktext</a>
"linktext(title)":url -> <a href="url" title="title">linktext</a>
!imageurl! -> <img src="imageurl" />
!imageurl(alt text)! -> <img src="imageurl" alt="alt text" />
!imageurl!:linkurl -> <a href="linkurl"><img src="imageurl" /></a>
ABC(Always Be Closing) -> <acronym title="Always Be Closing">ABC</acronym>