Comment Rules Text on the Comment Page

Can anyone tell me where in the style/site this text is called?

Comment Rules

Stick to the subject of the post. Your response will appear instantly, unless you have angered my spam filter, which will hold your comment until I approve it. Do not repost; I’ll approve or delete your comment at my convenience. Comments are the responsibility of commenter.

I want to modify this but I cannot find it ANYWHERE.