All the HTML tags listed in the FAQ:

a link
abbr.
acr.
bold
big

a blockquote

line
break
a citation
“class” – eh?
some code
deleted text

emphasis
font tags are bad

heading 1

heading 2

heading 3

heading 4

heading 5

heading 6

italic

inserted text
keyboard text

a paragraph

pre-
formatted
text

a quote
strike
strong
_subtext
^supertext
teletype text
variable

List tags:

term

definition

term 2

definition 2

• item 1
• item 2

1. item 1
2. item 2

Table tags: