Copyright (c) 1987, 1988 by The Board of Trustees of the Leland Stanford Junior University 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 Stanford not be used in advertising or publicity pertaining to distribution of the software without specific, written prior permission. Stanford makes no representations about the suitability of this software for any purpose. The Software is provided "as is" without express or implied warranty.