Bulletin Board Code or BBCode is a lightweight markup language used to format posts in many message boards. They allow you to add formatting to your messages in the same way as HTML does, but have a simpler syntax and will never break the layout of the pages you are viewing. The ability to use BB code is set on a forum-by-forum basis by the administrator, so you should check the forum rules when you post a new message.
Available BBCODE and it's usage is EXPLAINED HERE
