











  Copyright 1984 by the Massachusetts Institute of Technology

Permission to use, copy, modify, and distribute these programs
and their documentation for any purpose and without fee is hereby
granted, provided that this copyright and permission notice
appear on all copies and supporting documentation, the name of
M.I.T. not be used in advertising or publicity pertaining to
distribution of the programs without specific prior permission,
and notice be given in supporting documentation that copying and
distribution is by permission of M.I.T.  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. 




