This is the perl module GD packaged for Debian GNU systems. Upstream source: http://www.cpan.org/modules/by-module/GD/ Upstream author: Lincoln Stein Copyright and licensing info, most files: The GD.pm interface is copyright 1995-2004, Lincoln D. Stein. It is covered by the Perl "Artistic License", which allows for free usage and redistribution. See the Artistic License in the Perl source package for details. Copyright and licensing info, bdf_scripts/bdf2gdfont.{pl,PLS}: Lincoln Stein , heavily adapted from bdftogd from Jan Pazdziora . Copyright (c) 2004 Cold Spring Harbor Laboratory This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself. On Debian GNU/Linux systems, the complete text of the Artistic Licence (the license used for Perl itself) can be found in `/usr/share/common-licenses/Artistic'.