Copyright © 2001 Keith Packard, member of The XFree86 Project, Inc.
Copyright © 2002 Hewlett Packard Company, Inc.
Copyright © 2006 Intel Corporation
Copyright © 2008 Keith Packard
Copyright © 2013 NVIDIA Corporation

Permission to use, copy, modify, distribute, and sell this software and its
documentation for any purpose is hereby granted without fee, provided that
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that the name of the copyright holders not be used in advertising or
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