/* Copyright (c) 1991 Bell Communications Research, Inc. (Bellcore)
 * Permission to use, copy, modify, and distribute this material for any purpose
 * and without fee is hereby granted, provided that the above copyright notice
 * and this permission notice appear in all copies, and that the name of
 * Bellcore not be used in advertising or publicity pertaining to this material
 * without the specific, prior written permission of an authorized representative
 * of Bellcore.  BELLCORE MAKES NO REPRESENTATIONS ABOUT THE ACCURACY OR
 * SUITABILITY OF THIS MATERIAL FOR ANY PURPOSE.  IT IS PROVIDED "AS IS",
 * WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES.
*/