How to write the word 'signature' in Chinese?

How do you write the word 'signature' using Chinese characters? I don't mean the actual handwritten signature, but I mean the signature used in discussion forums such as gamefaqs and minecraft forums. I'm just curious ~

Sounds like "chyen ming") -- signature (also forum "signature", i.e.: a short sentence or phrase automatically attached to posts) [1]

Just as in English, the two words are the same. [2]