m terry@eecea.eece.ksu.edu rob Your question about the propriety and/or legality of using and distributing the source for the hoc calculator found its way to me by a rather roundabout route. Rob and I have always felt that the code should be easily available for people to experiment with. As far as we are concerned, the source code for hoc may be freely distributed provided all copies of it and programs derived from it indicate that they contain copyrighted material from The Unix Programming Environment by Kernighan & Pike, Prentice-Hall, 1984. Good luck with your thesis. Brian Kernighan cc: rob .