Copyright © 1988 by the Massachusetts Institute of Technology .
Permission to use, copy, modify, and distribute this software and its documentation for any purpose and without fee is hereby granted, provided that the above copyright notice appear in all copies and that both that copyright notice and this permission notice appear in supporting documentation, and that the name of M.I.T. not be used in advertising or publicity pertaining to distribution of the software without specific, written prior permission. M.I.T. makes no representations about the suitability of this software for any purpose. It is provided "as is" without express or implied warranty.
Ultrix and Ultrix-32 are trademarks of Digital Equipment Corporation; SunOS is a trademark of Sun Microsystems, Inc.; HP-UX is a trademark of Hewlett-Packard, Domain is a trademark of Apollo Computer, PostScript is a trademark of Adobe Systems Inc., and Unix is a trademark of AT&T Bell Laboratories.