Looking for regex documentation.

[JLerster]

While reading about some regex functions I saw things like [:graph:] and [:digit:] where used often, but I cant find any documentation that explains what they are, or how many other of them there might be (I hope you understand what I'm getting at). Dose any body know were I can find documentation about these?

[CaptianChaos]

Go to http://www.google.com/ and search for regular expression

You will find a ton of documentation.