Perry Newhook is a Computer Engineer with the Space System R&D division of Spar Aerospace Limited in Toronto. He has been using OS/2 since version 1.2. Perry can be reached at pnewhook@spar.ca, and at perry@edm2.com. Perry has written the following columns: OpenGL on OS/2 - An Introduction  (July 1997) OpenGL on OS/2 - A Simple Application  (August 1997) OpenGL on OS/2 - A Simple 3D Application  (September 1997)