The hypertext markup for this document was created by Howard R. Stearns from the TeX sources available at Xerox Parc. Any errors are his fault and no one else's. The original work is copyright 1991 by the Massachusetts Institute of Technology.
This HyperText version is copyright 1997 by Elwood Corporation, and permission is granted to use it and reference it as a normal HTML document, and to make and distribute copies provided the copies are complete and unmodified.