ocr: 3D Rotation Experiment by Michael Chen This is a version of the 3D rotation experiment prugraill described in the paper A Study jin Interactive 3D Rotation Using 2D Control Devices by Michael Chen, S.Joy Mounttord & Abigail Sellen in the Siggraph '88 Proceedings (ACM Computer Graphics, Vol22,*4, August 1988). This program is copyrighted, but may be distributed freely. If you like this program, why not make a $5 donation to your ravorite charity. comments are welcomed. IC can be reached at Email: cheneapple.com AppleLink: CHEN.M O Apple Computer, Inc. 1989