throuh which /dev port does "chat" cmd look?

Through which /dev port does "chat" cmd look? I can't find this info anywhere in the chat man page. There exists no "usr/share/doc/chat" directory. -- The Toronto Linux Users Group. Meetings: http://tlug.ss.org TLUG requests: Linux topics, No HTML, wrap text below 80 columns How to UNSUBSCRIBE: http://tlug.ss.org/subscribe.shtml