Source: http://xkbcommon.org/

Copyright 1985, 1987, 1988, 1990, 1998  The Open Group
Copyright 2008, 2009  Dan Nicholson

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Copyright (c) 1993, 1994, 1995, 1996 by Silicon Graphics Computer Systems, Inc.

Permission to use, copy, modify, and distribute this
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Copyright 1987, 1988 by Digital Equipment Corporation, Maynard, Massachusetts.

                        All Rights Reserved

Permission to use, copy, modify, and distribute this software and its
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provided that the above copyright notice appear in all copies and that
both that copyright notice and this permission notice appear in
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