YOU CAN'T POAST COLORS OTHER THAN GREEN SO STOP FUCKING ASKING.
BBCode on 4chan (also ref. TGML (a.k.a. S3KR1T K0DZ)):
[b] bold: bold [i] italic: italic [m] courier: courier font [o] overline: overline [s] strikeout: strikeout [u] underline: underline [sup] superscript: superscript [sub] subscript: subscript [code] preserve spacing and literalize tags: 'Let's talk about the [m] tag!' [br] break:
[spoiler] hides text unless mouseover: spoiler
For color (green), use quotes in [code] tag: "This is green text."
Use the [code] tag for ASCII art.
Quote codes:
> This is the quoted material.
... looks like this:
This is the quoted material.
The ">" quote code is only used at the beginning of a line, and also stacks up to 3 deep with spaces between them:
> > > Lick my balls. > > NO U! > The both of you can STFU!
... looks like this:
Lick my balls. NO U! The both of you can STFU!
...
For characters, use Lucida Console font.
ON THE IMAGEBOARDS:
To greentext: Enter a ">" before the text, this only works if you have no text on the line before ">"
To quote: Click on someones post number
To sage: Type "sage" in the email field -- this allows you to post without bumping a thread
To noko: Type "noko" in the email field to auto return to the thread you posted in
To blankpost #1: Hit enter a couple of times in the reply box
To blankpost #2: Hold alt and type 0173 (Microsoft Windows only); this creates a textless character that will leave you nameless if typed in the "name" field (no "Anonymous") or can be used to bypass wordfilter as well
To PENIS: Type "PENIS" five or more times; it will filter your entire post to the word "PENIS" once and unfiltered. This also works for "VAGINA" and "BUTTSEX".
To "red name": Use a textless character (see alt+0173) in the name field and then type the desired name in the subject field. Subjects are ALWAYS red.