X Version 11, Release5 Copyright and Permission Notice

COPYRIGHT
The following copyright and permission notice outlines the rights and restrictions covering most parts of the core distribution of the X Window System from MIT. Other parts have additional or different copyrights and permissions; see the individual source files.

Copyright 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991 by the Massachusetts Institute of Technology.

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 name of MIT not be used in advertising or publicity pertaining to distribution of the software without specific, written prior permission. MIT makes no representations about the suitability of this software for any purpose. It is provided "as is" without express or implied warranty.

TRADEMARKS
X Window System is a trademark of MIT.