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BBCode or Bulletin Board Code is a lightweight markup language used to format posts in many message boards. The available tags are usually indicated by square brackets ([ ]) surrounding a keyword, and they are parsed by the message board system before being translated into a markup language that web browsers understand—usually HTML or XHTML.
BBCode was first introduced in 1998 by the messageboard software Ultimate Bulletin Board (UBB).
(usually implemented in more advanced ways)
|To quote: |
(The unit of measurement varies with each BBCode variant and could represent pixels, points, or relative HTML sizes.)
(And other emoticons, depending on the variant. Most BBCodes do not enclose emoticons in square brackets, leading to frequent accidental usage)
(Specific image and size vary)
Some message boards do not need the square brackets around the markers, e.g.:
(many variants for li and /li, list types (unordered and ordered, with different bullets or counter formats), etc.)
Some forums may allow the tag [background]. It is used similarly to the [img] tag and should be used with an image filename to display as the post background.
Many message boards include a FAQ with information on how to use their own variants of BBCode. In addition, some bulletin board systems allow administrators to define their own custom BBCodes. This is usually done by asking them to specify the BBCode markup (utilizing variables/wildcards to indicate the user-customizable parts of the code) and then indicating the XHTML replacement which will be substituted for the BBCode.
Web 2.0 progression of BBCode sees the uncommon occurrence of new tags such as [youtube], [facebook], and [skype] tags.