From: utzoo!decvax!harpo!seismo!hao!hplabs!sri-unix!mark.umcp-cs@UDel-Relay Newsgroups: net.unix-wizards Title: Re: SIGTSTP, Suncalc and 11's Article-I.D.: sri-arpa.932 Posted: Sat Apr 2 15:30:43 1983 Received: Wed Apr 20 05:12:18 1983 From: Mark Weiser SIGTSTP is a Berkeley Unix signal which is sent by a user at a keyboard (usually) and causes the process receiving it to stop. Processes which control the screen generally intercept this signal, clean up a little, and then stop themselves by restoring the default signal and sending themselves a SIGTSTP. When they wakeup they can then restore the screen to its old value. If your code in SUNCALC is doing anything like that, you should be able to safely throw that code out.