one graphics terminal/many users

[ZUCCOLA]

	Has anyone had the following problem:


You're sitting at your workstation graphics window, when low and
behold someone else has accidentally started a program that starts
running on top of what you're doing?! Is there anyway to "lockout"
other users so that if they accidentally try to start something 
"graphic" and they aren't the person using the machine their process
won't start?

			Just thought I'd ask,
			H-----