| 1 | GNU GENERAL PUBLIC LICENSE
|
|---|
| 2 | Version 1, February 1989
|
|---|
| 3 |
|
|---|
| 4 | Copyright (C) 1989 Free Software Foundation, Inc.
|
|---|
| 5 | 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA
|
|---|
| 6 | Everyone is permitted to copy and distribute verbatim copies
|
|---|
| 7 | of this license document, but changing it is not allowed.
|
|---|
| 8 |
|
|---|
| 9 | Preamble
|
|---|
| 10 |
|
|---|
| 11 | The license agreements of most software companies try to keep users
|
|---|
| 12 | at the mercy of those companies. By contrast, our General Public
|
|---|
| 13 | License is intended to guarantee your freedom to share and change free
|
|---|
| 14 | software--to make sure the software is free for all its users. The
|
|---|
| 15 | General Public License applies to the Free Software Foundation's
|
|---|
| 16 | software and to any other program whose authors commit to using it.
|
|---|
| 17 | You can use it for your programs, too.
|
|---|
| 18 |
|
|---|
| 19 | When we speak of free software, we are referring to freedom, not
|
|---|
| 20 | price. Specifically, the General Public License is designed to make
|
|---|
| 21 | sure that you have the freedom to give away or sell copies of free
|
|---|
| 22 | software, that you receive source code or can get it if you want it,
|
|---|
| 23 | that you can change the software or use pieces of it in new free
|
|---|
| 24 | programs; and that you know you can do these things.
|
|---|
| 25 |
|
|---|
| 26 | To protect your rights, we need to make restrictions that forbid
|
|---|
| 27 | anyone to deny you these rights or to ask you to surrender the rights.
|
|---|
| 28 | These restrictions translate to certain responsibilities for you if you
|
|---|
| 29 | distribute copies of the software, or if you modify it.
|
|---|
|
|---|
