bbcode v0.1

[bbcode]
[title="Hello World"]
[author="Anonymous"]

[main]
  [let="a"]5[/let]
  [while]a>0[do]
  [let="a"]a-1[/let]
  Hello, World!
  [val="a"]
  [/do]
  [/while]
  [call="test"]
[/main]

[test]
hihihi world!
[/test]

[/bbcode]

suggest and improve.

screw you people, i've already started defining a syntax, and it is superior to yours.
e.g:

[BBCPL]
[DEF = "EXPERT"][b][o][u]^[/u][/o][/b][/DEF]
[DEF = "LINK"]<a href ="$1">^</a>
[FOR = " [INT = "i"]o[/INT]:[i]<5:[+[i],1]]
[LOL]
[/FOR]
[/BBCPL]

[FUNC = "LOL"]
     [PRINT]Hello world!
     [EXPERT]EXPERT BBCODE PROGRAMMING![/EXPERT]
     [LINK ="http://mitpress.mit.edu/sicp/"]READ SICP![/LINK][/PRINT]
[/FUNC]

as you can see, this is EXPERT BBCODE