sorry about going off topic, but here is a list of the "tags" and how they can be applied....
Markup Tags
For security reasons, mwForum only supports its own set of markup tags, no HTML tags. Available markup tags:(like previously stated do not use the spaces)
[ b ] text [ /b ] renders text bold =
text[ i ] text [ /i ] renders text italic =
text[ tt ] text [ /tt ] renders text nonproportional =
text
[url]address[/url] links to the address
[url=address]text[/url] links to the address with the given text
[img]address[/img] embeds a remote image (if enabled)
[img]filename[/img] embeds an attached image
[img thb]filename[/img] embeds an attached image's thumbnail (if available)