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 them 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 prevent others from
denying you these rights or asking you to surrender the rights.
Therefore, you have certain responsibilities if you distribute
copies of the software, or if you modify it: responsibilities to
respect the freedom of others.
For example, if you distribute copies of such a program,
whether gratis or for a fee, you must pass on to the recipients
the same freedoms that you received. You must make sure that
they, too, receive or can get the source code. And you must
show them these terms so they know their rights.
Developers that use the GNU GPL protect your rights with two
steps: (1) assert copyright on the software, and (2) offer you this
License giving you legal permission to copy, distribute and/or
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