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/usr/share/doc/xscreensaver/copyright is in xscreensaver 5.15-3ubuntu1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

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Format-Specification: 
    http://wiki.debian.org/Proposals/CopyrightFormat?action=recall&rev=196
Upstream-Author: Jamie Zawinski <jwz@jwz.org>
Packaged-By: Larry Daffner <vizzie@airmail.net>
Upstream-Name: XScreenSaver
Original-Source-Location: 
    http://www.jwz.org/xscreensaver/xscreensaver-(.*)\.tar\.gz
Original-Source-Command: uscan --force-download
Original-Source-Depends: devscripts

Files: *
Copyright: © 1991-2008 Jamie Zawinski <jwz@jwz.org>
License: Other
 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.  No representations are made about the suitability of this
 software for any purpose.  It is provided "as is" without express or 
 implied warranty.

Files: hacks/flame.{man,c}, 
       hacks/bouboule.{man,c},
       hacks/hopalong.{man,c}
Copyright: © 1988-1991 Patrick J. Naughton
License: Other
 Permission to use, copy, modify, and distribute this software and its
 documentation for any purpose and without fee is hereby granted,
 provided that the above copyright notice appear in all copies and that
 both that copyright notice and this permission notice appear in
 supporting documentation.

Files: hacks/xanalogtv.{man,c}, hacks/analogtv.{c,man}
Copyright: © 2003 Trevor Blackwell <tlb@tlb.org>
License: Other
 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.  
 No representations are made about the suitability of this software for any 
 purpose.  It is provided "as is" without express or implied warranty.

Files: hacks/lissie.{man,c}
Copyright: © 1996-2002 Alexander Jolk <ub9x@rz.uni-karlsruhe.de>
License: Other
 Permission to use, copy, modify, and distribute this software and its
 documentation for any purpose and without fee is hereby granted,
 provided that the above copyright notice appear in all copies and that
 both that copyright notice and this permission notice appear in
 supporting documentation.

 This file is provided AS IS with no warranties of any kind.  The author
 shall have no liability with respect to the infringement of copyrights,
 trade secrets or any patents by this file or any part thereof.  In no
 event will the author be liable for any lost revenue or profits or
 other special, indirect and consequential damages.

Files: hacks/munch.{c,man}
Copyright: © 1997 Tim Showalter
License: Other
 Permission is granted to copy, modify, and use this as long
 as this notice remains intact.  No warranties are expressed or implied.
 CMU Sucks.

Files: hacks/squiral.{c,man}
Copyright: © 1999 Jeff Epler <jepler@inetnebr.com>
License: Same as hacks/xanalogtv.{c,man}

Files: hacks/euler2d.{c,man}, hacks/polyominoes.{c,man}
Copyright: © 2000 Stephen Montgomery-Smith <stephen@math.missouri.edu>
License: Same as hacks/lissie.{c,man}

Files: hacks/sierpinski.{c,man}
Copyright: © 1996 Desmond Daignault
License: Same as hacks/lissie.{c,man}

Files: hacks/wormhole.{c,man}
Copyright: © 2004 Jon Rafkind
License: Same as hacks/xanalogtv.{c,man}

Files: hacks/xspirograph.c
Copyright: © 2000 Rohit Singh <rohit_singh@hotmail.com>
License: Same as hacks/xanalogtv.{c,man}

Files: hacks/petri.{man,c}, 
       hacks/nerverot.{c,man}
Copyright: © 1992-2000 Dan Bornstein <danfuzz@milk.com>
License: Same as hacks/xanalogtv.{c,man}

Files: hacks/xflame.{c,man}
Copyright: © 1996-2002 Carsten Haitzler <raster@redhat.com>
License: Same as hacks/xanalogtv.{c,man}

Files: hacks/bumps.{c,man}
Copyright: © 1999-2006 Shane Smit
License: Same as hacks/xanalogtv.{c,man}

Files: hacks/vines.{c,man}
Copyright: © 1997 Tracy Camp <campt@hurrah.com>
License: Same as hacks/lissie.{c,man}

Files: hacks/celtic.{man,c}
Copyright: © 2006 Max Froumentin <max@lapin-bleu.net>
License: Same as hacks/xanalogtv.{c,man}

Files: hacks/metaballs.{c,man}
Copyright: © 2002-2003 W.P. van Paassen <peter@paassen.tmfweb.nl>
License: Same as hacks/xanalogtv.{c,man}

Files: hacks/grav.{c,man}
Copyright: © 1993 Greg Bowering
License: Same as hacks/lissie.{c,man}

Files: hacks/penetrate.{c,man}
Copyright: © 1999 Adam Miller
License: Same as hacks/xanalogtv.{c,man}

Files: hacks/kaleidescope.{c,man} 
Copyright: © 1997-2006 Ron Tapia <tapia@nmia.com>
License: Same as hacks/xanalogtv.{c,man}

Files: hacks/truchet.{c,man}
Copyright: © 1998 Adrian Likins <adrian@gimp.org>
License: Same as hacks/xanalogtv.{c,man}

Files: hacks/spiral.{c,man}
Copyright: © 1994 Darrick Brown
License: Same as hacks/lissie.{c,man}

Files: hacks/noseguy.{man,c}
Copyright: © 1985-1990 Dan Heller <argv@danheller.com>
License: Same as XScreenSaver

Files: hacks/hyperball.{man,c}
Copyright: © 2000 Joe Keane.
License: Same as XScreenSaver

Files: hacks/laser.{man,c}
Copyright: © 1995 Pascal Pensa <pensa@aurora.unice.fr>
License: Same as hacks/lissie.{c,man}

Files: hacks/interference.{man,c}
Copyright: © 1998 Hannu Mallat <hmallat@cs.hut.fi>
License: Same as hacks/xanalogtv.{c,man}

Files: hacks/epicycle.{man,c}
Copyright: © 1998 James Youngman <jay@gnu.org>
License: Same as hacks/xanalogtv.{c,man}

Files: hacks/mountain.{man,c}
Copyright: © 1995 Pascal Pensa <pensa@aurora.unice.fr>
License: Same as hacks/lissie.{c,man}

Files: hacks/juggle.{man,c}
Copyright: © 1996 Tim Auckland <tda10.geo@yahoo.com>
License: Same as hacks/lissie.{c,man}

Files: hacks/kumppa.{man,c}
Copyright: © 1998-2002 Teemu Suutari <temisu@utu.fi>
License: MIT with extra notice
 Permission is hereby granted, free of charge, to any person obtaining
 a copy of this software and associated documentation files (the
 "Software"), to deal in the Software without restriction, including
 without limitation the rights to use, copy, modify, merge, publish,
 distribute, sublicense, and/or sell copies of the Software, and to
 permit persons to whom the Software is furnished to do so, subject to
 the following conditions:

 The above copyright notice and this permission notice shall be included
 in all copies or substantial portions of the Software.
 
 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 IN NO EVENT SHALL THE X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR
 OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 OTHER DEALINGS IN THE SOFTWARE.
 
 Except as contained in this notice, the name of the X Consortium shall
 not be used in advertising or otherwise to promote the sale, use or
 other dealings in this Software without prior written authorization
 from the X Consortium.

Files: hacks/automata.h
Copyright: © 1995 David Bagley
License: Same as hacks/lissie.{c,man}

Files: hacks/anemone.{c,man}
Copyright: © 2001-2002 Gabriel Finch
License: Same as hacks/xanalogtv.{c,man}

Files: hacks/crystal.{c,man}
Copyright: © 1997 Jouk Jansen <joukj@crys.chem.uva.nl>
License: Same as hacks/lissie.{c,man} extended
 Permission to use, copy, modify, and distribute this software and its
 documentation for any purpose and without fee is hereby granted,
 provided that the above copyright notice appear in all copies and that
 both that copyright notice and this permission notice appear in
 supporting documentation.
 
 This file is provided AS IS with no warranties of any kind.  The author
 shall have no liability with respect to the infringement of copyrights,
 trade secrets or any patents by this file or any part thereof.  In no
 event will the author be liable for any lost revenue or profits or
 other special, indirect and consequential damages.
 
 The author should like to be notified if changes have been made to the
 routine.  Response will only be guaranteed when a VMS version of the 
 program is available.

Files: hacks/blaster.{c,man}
Copyright: © 1999 Jonathan H. Lin <jonlin@tesuji.org>
License: Same as hacks/xanalogtv.{c,man}

Files: hacks/ant.c
Copyright: © 1995 David Bagley
License: Same as hacks/lissie.{c,man}

Files: hacks/rotor.c
Copyright: © 1991 Patrick J. Naughton
License: Same as hacks/lissie.{c,man}

Files: hacks/rotor.man
Copyright: © 2002 Tom Lawrence
License: Same as hacks/xanalogtv.{c,man}

Files: hacks/demon.{c,man}
Copyright: © 1995-2002 David Bagley
License: Same as hacks/xanalogtv.{c,man}

Files: hacks/interaggregate.{man,c}
Copyright: © 2003 J. Tarbell
License: Same as hacks/xanalogtv.{c,man}

Files: hacks/ccurve.{c,man}, hacks/wander.{c,man}
Copyright: © 1998-2002 Rick Campbell <rick@campbellcentral.org>
License: Same as hacks/xanalogtv.{c,man}

Files: hacks/pacman{_ai.h,_ai.c,.c,.h,.man,_level.c,_level.h}
Copyright: © 2002 Edwin de Jong <mauddib@gmx.net>
License: Same as hacks/lissie.{c,man}

Files: hacks/penrose.{c,man}
Copyright: © 1996 Timo Korvola <tkorvola@dopey.hut.fi>
License: Same as hacks/lissie.{c,man}

Files: hacks/spotlight.{c,man}
Copyright: © 1999 Rick Schultz
License: Same as hacks/xanalogtv.{c,man}

Files: hacks/triangle.{c,man}
Copyright: © 1995 Tobias Gloth
License: Same as hacks/lissie.{c,man}

Files: hacks/zoom.{c,man}
Copyright: © 2000 James Macnicol
License: Same as hacks/xanalogtv.{c,man}

Files: hacks/speedmine.{c,man}
Copyright: © 2001 Conrad Parker <conrad@deephackmode.org>
License: Same as hacks/xanalogtv.{c,man}

Files: hacks/popsquares.{c,man}
Copyright: 2003 Levi Burton <donburton@sbcglobal.net>
License: Same as hacks/xanalogtv.{c,man}

Files: hacks/flag.{c,man}
Copyright: © 1996 Charles Vidal <vidalc@univ-mlv.fr>
License: Same as hacks/lissie.{c,man}

Files: hacks/fireworkx{.c,.man,_mmx.S}
Copyright: © 1999-2007 Rony B Chandran <ronybc@asia.com>
License: Same as hacks/xanalogtv.{c,man}

Files: hacks/xsublim.{c,man}
Copyright: © 1999-2000 Greg Knauss <greg@eod.com>
License: Same as hacks/xanalogtv.{c,man}

Files: hacks/imsmap.{c,man}
Copyright: © 1992-2008 Juergen Nickelsen and Jamie Zawinski
License: Same as hacks/xanalogtv.{c,man}

Files: hacks/maze.{c,man}, hacks/sphere.{c,man}
Copyright: © 1988 Sun Microsystems
License: Other
 Permission to use, copy, modify, and distribute this software and its
 documentation for any purpose and without fee is hereby granted, 
 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 Sun or MIT not be
 used in advertising or publicity pertaining to distribution of the
 software without specific prior written permission. Sun and M.I.T. 
 make no representations about the suitability of this software for 
 any purpose. It is provided "as is" without any express or implied warranty.
 
 SUN DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
 ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 PURPOSE. IN NO EVENT SHALL SUN BE LIABLE FOR ANY SPECIAL, INDIRECT
 OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
 OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE 
 OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE
 OR PERFORMANCE OF THIS SOFTWARE.

Files: hacks/vermiculate.{c,man}
Copyright: © 2002 Tyler Pierce
License: Same as hacks/xanalogtv.{c,man}

Files: hacks/abstractile.{c,man}
Copyright: © 2004 Steve Sundstrom
License: Same as hacks/xanalogtv.{c,man}

Files: hacks/flow.{c,man}
Copyright: © 1996 Tim Auckland <Tim.Auckland@Procket.com>
License: Same as hacks/lissie.{c,man}

Files: hacks/braid.{c,man}
Copyright: © 1995 John Neil
License: Same as hacks/lissie.{c,man}

Files: hacks/asm6502.{h,c,man}
Copyright: © Jeremy English <jhe@jeremyenglish.org>
License: Same as hacks/xanalogtv.{c,man}

Files: hacks/pedal.{c,man}
Copyright: © 1994 Carnegie Mellon University
License: Same as hacks/xanalogtv.{c,man}

Files: hacks/glx/chessmodels.{c,man}
Copyright: © 2006 John-Paul Gignac <jjgignac@users.sf.net>
           © 2002 Robert Ancell <bob27@users.sourceforge.net>
	   © 2002 Michael Duelli <duelli@users.sourceforge.net>
License: GPL-2+
 This program is free software; you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation; either version 2 of the License, or
 (at your option) any later version.

 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.

 You should have received a copy of the GNU General Public License along
 with this program; if not, write to the Free Software Foundation, Inc.,
 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

Files: hacks/glx/tangram.{man,c}
Copyright: © 2005 Jeremy English <jhe@jeremyenglish.org>
License: same as hacks/xanalogtv.{c,man}

Files: hacks/glx/moebius.{c,man}
Copyright: © 1997-2002 Marcelo F. Vianna <mfvianna@centroin.com.br>
License: same as hacks/lissie.{c,man}

Files: hacks/glx/timetunnel.{c,man}
Copyright: © 2005 Sean Brennan <zettix@yahoo.com>
License: same as hacks/xanalogtv.{c,man}

Files: hacks/glx/glcells.{c,man}
Copyright: © 2007 Matthias Toussaint
License: same as hacks/lissie.{c,man}

Files: hacks/glx/{glut_roman,glut_stroke,glutstroke,glut_swidth}.c
Copyright: © 1989-1995 Mark J. Kilgard
License: Other
 This program is freely distributable without licensing fees 
 and is provided without guarantee or warrantee expressed or 
 implied. This program is -not- in the public domain.
 
Files: hacks/glx/stonerview*
Copyright: © 1998-2001 Andrew Plotkin <erkyrath@eblong.com>
License: same as hacks/xanalogtv.{c,man}

Files: hacks/glx/tunnel_draw.{c,h}
Copyright: © 2002-2004 E. Lassauge
License: same as hacks/lissie.{c,man}



Files: debian/*
Copyright: © 1996-2002 Larry Daffner <vizzie@airmail.net>
           © 2002 Colin Watson <cjwatson@debian.org>
	   © 2002-2005 Karl Ramm <kcr@debian.org>
	   © 2005-2007 Ralf Hildebrandt <ralf.hildebrandt@charite.de>
	   © 2005-2007 Josselin Mouette <joss@debian.org>
	   © 2007-2009 Jose Luis Rivas <ghostbar@debian.org>
	   © 2007-2009 Tormod Volden <debian.tormod@gmail.com>
License: MIT
 Permission is hereby granted, free of charge, to any person obtaining
 a copy of this software and associated documentation files (the
 "Software"), to deal in the Software without restriction, including
 without limitation the rights to use, copy, modify, merge, publish,
 distribute, sublicense, and/or sell copies of the Software, and to
 permit persons to whom the Software is furnished to do so, subject to
 the following conditions:

 The above copyright notice and this permission notice shall be included
 in all copies or substantial portions of the Software.
 
 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 IN NO EVENT SHALL THE X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR
 OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 OTHER DEALINGS IN THE SOFTWARE.

On Debian GNU/Linux systems, the complete text of the GNU General
Public License can be found in `/usr/share/common-licenses/GPL'.