Extensions » BBCode Blocker
BBCode Blocker Extension
The BBCode Blocker allows you to disable certain BBCode tags for certain users.
To disable a tag, open the "Disable BBCode" administration page. Then, enter the tag you want to block (e.g. "b", "quote", "color", etc.) Do not enter the brackets. Then, check any user groups that this restriction would apply to.
Editing a restriction item is the same procedure as creating one. Simply click "Edit" and then enter the necessary information.