1Copyright 1998 by the Massachusetts Institute of Technology. 2 3Permission to use, copy, modify, and distribute this software and its 4documentation for any purpose and without fee is hereby granted, provided that 5the above copyright notice appear in all copies and that both that copyright 6notice and this permission notice appear in supporting documentation, and that 7the name of M.I.T. not be used in advertising or publicity pertaining to 8distribution of the software without specific, written prior permission. 9M.I.T. makes no representations about the suitability of this software for any 10purpose. It is provided "as is" without express or implied warranty. 11