VSW4 license

Copyright 1992 , 1999 X/Open Company Limited, trading as The Open Group
Copyright 1990, 1991, 1992 by the Massachusetts Institute of Technology and
UniSoft Group Limited.

Permission to use, copy, modify, distribute, and sell this software and
its documentation for any purpose is hereby granted without fee,
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 names of X/Open, MIT and UniSoft not be
used in advertising or publicity pertaining to distribution of the
software without specific, written prior permission.  X/Open, MIT and UniSoft
make no representations about the suitability of this software for any
purpose.  It is provided "as is" without express or implied warranty.