/usr/share/doc/libgtkspell3-3-dev/copyright is in libgtkspell3-3-dev 3.0.6-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 | This package was debianized by Ari Pollak <ari@debian.org> on
Sun, 5 May 2002 16:12:31 -0400.
It was downloaded from <http://gtkspell.sf.net>.
Upstream Authors:
    Nathan Fredrickson <nathan@silverorange.com>
    Eduardo Pérez Ureta <eperez@users.sourceforge.net>
Copyright:
    gtkspell/*:
        Copyright (c) 2002 Evan Martin <martine@cs.washington.edu>
    
    po/*:
        Copyright (C) 2003-2008 Free Software Foundation, Inc.
        Copyright (C) 2007 Armenian Translation team
        Copyright (c) 2002 Evan Martin <martine@cs.washington.edu>
        Copyright (C) 2008 Gintautas Miliauskas
		Copyright (C) 1995, 1996, 1997 by Ulrich Drepper
		 <drepper@gnu.ai.mit.edu>
License:
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License
    version 2 as published by the Free Software Foundation.
    
    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.
    
    On Debian systems, the complete text of the GNU General Public
    License can be found in /usr/share/common-licenses/GPL-2.
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