Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/ Source: http://offog.org/code/xpopple/ Upstream-Name: xpopple Upstream-Contact: Adam Sampson Files: * Copyright: 1996-2014 Derek B. Noonburg 1996-2014 Glyph & Cog, LLC. 2014-2021 Adam Sampson License: GPL-2 or GPL-3 Xpdf is licensed under the GNU General Pulbic License (GPL), version 2 or 3. This means that you can distribute derivatives of Xpdf under any of the following: - GPL v2 only - GPL v3 only - GPL v2 or v3 . The Xpdf source package includes the text of both GPL versions: COPYING for GPL v2, COPYING3 for GPL v3. . Please note that Xpdf is NOT licensed under "any later version" of the GPL, as I have no idea what those versions will look like. . If you are redistributing unmodified copies of Xpdf (or any of the Xpdf tools) in binary form, you need to include all of the documentation: README, man pages (or help files), COPYING, and COPYING3. . If you want to incorporate the Xpdf source code into another program (or create a modified version of Xpdf), and you are distributing that program, you have two options: release your program under the GPL (v2 and/or v3), or purchase a commercial Xpdf source license. . If you're interested in commercial licensing, please see the Glyph & Cog web site: . http://www.glyphandcog.com/ . On Debian systems, the full text of the GNU General Public License version 2 can be found in the file `/usr/share/common-licenses/GPL-2', while the full text of the GNU General Public License version 3 can be found in the file `/usr/share/common-licenses/GPL-3'. Files: debian/* Copyright: 1996-1998 Dirk Eddelbuettel 1998-2007 Hamish Moffatt 2010 Osamu Aoki 2010 Rogério Theodoro de Brito 2010-2016 Michael Gilbert 2017-2019 Gianfranco Costamagna 2017-2021 Florian Schlichting License: GPL-2 On Debian systems, the full text of the GNU General Public License version 2 can be found in the file `/usr/share/common-licenses/GPL-2'.