vBulletin Manual - BB Code Settings

vBulletin Options > vBulletin Options > BB Code Settings

Enabled Built-in BB Code Tags
This setting allows you to enable and disable various built-in BB code tags in vBulletin. The BB Codes that can be enabled or disabled here are:

Basic BB Code (Bold, Italic, Underline)
Color BB Code
Size BB Code
Font BB Code
Alignment BB Code
List BB Code
Link BB Code
Code BB Code
PHP BB Code
HTML BB Code
Note:
Disabling a BB code tag will prevent it from working anywhere on the forum, including signatures, private messages, user notes etc.
Maximum [CODE] Lines
When a user posts a block of [CODE], [PHP] or [HTML] in one of their messages, the system will place it in a box, which expands to contain their message.

This value controls the number of lines at which the box stops adding height and inserts a scrollbar.
Allow BB Code in Non Forum Specific Areas
Allow users to include BB code in non-forum-specific areas? (Such as [b], [i] etc.)
Allow Smilies in Non Forum Specific Areas
Allow users to include smilies in Non Forum Specific Areas?
Allow [IMG] Code in Non Forum Specific Areas
Allow users to include [IMG] codes in Non Forum Specific Areas?
Allow HTML in Non Forum Specific Areas
Allow users to include raw HTML code in Non Forum Specific Areas?
Warning:
Enabling this setting is strongly not recommended.