Name Tag Wiki Mark
Boldface <b>text</b> *text*
Italics <i>text</i> /text/
Underline <u>text</u> _text_
Superscript text <sup>text</sup>
Subscript text <sub>text</sub>
Strikethrough <s>text</s> -text-
Headers <h1>header</h1> (and h2...h5) = header =
== sub ==
Lists <ul><li>item 1</li><li>item 2</li></ul>
<ol><li>item 1</li><li>item 2</li></ol>
* item 1
* item 2

# item 1
# item 2
Hyperlinks <a href="http://www.allegro.cc">Allegro.cc</a> http://www.allegro.cc
[http://www.allegro.cc Allegro.cc]
[http://www.allegro.cc .] (show URL as caption)
Images <img src="http://www.allegro.cc/theme/default/image/logo.png" /> [http://www.allegro.cc/theme/default/image/logo.png]
Objects <object data="http://" /> [http://foo/bar.mp3]
Math <math size="1|2|3">x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}</math>

size is optional

See Wikipedia's article for tutorials on the syntax.
Monospaced Text <tt>one line</tt>

<pre>multiple
lines</pre>

<terminal>scrolling text</terminal>
Quotes <quote name="person" src="http://">text</quote> > Quote
>> Nested Quote
Source Code <code start="1">int x = 1;</code> `int x = 1;`