This software is Copyright 1987 by Mike Parker.  Permission is granted
to use and modify as you will, provided that you

	- do not remove or modify any part of this notice.  You may
	   append to it, but not modify any existing part of it.

	- do not mis-attribute authorship of any part of the
	   distribution or your modifications thereto.

	- do not redistribute without authorization from the author.
