Telekom Speedport W100 Bedienungsanleitung Seite 54

Public License applies to most of the Free Software Foundation's
software and to any other program whose authors commit to using it.
(Some other Free Software Foundation software is covered by the GNU
Library General Public License instead.) You can apply it to your
programs, too. When we speak of free software, we are referring to
freedom, not price. Our General Public Licenses are designed to make
sure that you have the freedom to distribute copies of free software (and
charge for this service if you wish), that you receive source code or can
get it if you want it, that you can change the software or use pieces of it in
new free programs; and that you know you can do these things.
To protect your rights, we need to make restrictions that forbid anyone to
deny you these rights or to ask you to surrender the rights. These
restrictions translate to certain responsibilities for you if you distribute
copies of the software, or if you modify it.
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