[General] Text box editing

Where do I read about how to edit the contents of a text box?

Richard Karpinski, Nitpicker       [hidden email]
148 Sequoia Circle, Santa Rosa, CA 95401
Home +1 707-546-6760     Cell +1 707-228-9716
http://cfcl.com/twiki/bin/view/Friends/Karpinski/WebHome

ps Put (or leave) "nitpicker" in the subject line to get past my spam  
filters.