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display command
Leif Laaksonen CSC 2001
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#
# display the scene (this is usually always need)
#
# check opition (default) will look into the event queue during the display
# nocheck will not look into the even queue
# sleep Ivalue guarantees that the display takes at least Ivalue milliseconds
# this can be used for demos to slow down the display frequency if you have
# a very fast machine
#

disp$lay     chec$k
             noch$eck
			 slee$p     Ivalue

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LUL/2001
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