First, you have the editing tools on the "reply to existing message" page (and the "edit an existing message" page)...highlight the text you want and click the appropriate dialog. Click an icon in the "Post Icon" area to make the smiley appear in the subject title.

In addition to the on-screen editing tools, here are more UBB Codes...

(Take out space after first bracket)

[ email] joe@email.com [ /email] = Makes the given email address clickable.
[ code] text [ /code] = Surrounds the given text with pre tags.
[ quote] text [ /quote] = Surrounds the given text with blockquote and hr's. This UBBCode tag is used for quoting a reply.
[ url] link [ /url] = Makes the given url into a link.
[ url=link] title [ /url] = Makes the given title into a hyperlink pointing to link.
[ list]
[ *]Item 1
[ *]Item 1
[ /list] = Makes a bullet list. [list=A] or [list=1] will make order/numbered lists.

Here is how the above looks with spaces removed:

joe@email.com = Makes the given email address clickable.
</FONT>text <FONT class=standouttext> = Surrounds the given text with pre tags.

text