Neil McKay works in the Manufacturing Systems Research lab [1] at General Motors Research and Development. He also has taught computer graphics at the University of Michigan [2] in Ann Arbor. His web page is:

http://www.eecs.umich.edu/~mckay

The computer section of the web page has a number of Tcl/Tk extensions available for download, including:

• xop
• rootwin
• Rtcl
• vfs::inmem

Neil is also the author of Tk3D, which his employer has very graciously allowed him to release as open source code.

Also known as NDM.

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