Creative Commons License Deed

GNU General Public License, Free Software Foundation

The GNU General Public License is a Free Software license. Like any Free Software license, it grants to you the four following freedoms:

  1. The freedom to run the program for any purpose.
  2. The freedom to study how the program works and adapt it to your needs.
  3. The freedom to redistribute copies so you can help your neighbor.
  4. The freedom to improve the program and release your improvements to the public, so that the whole community benefits.

You may exercise the freedoms specified here provided that you comply with the express conditions of this license. The principal conditions are:

  • You must conspicuously and appropriately publish on each copy distributed an appropriate copyright notice and disclaimer of warranty and keep intact all the notices that refer to this License and to the absence of any warranty; and give any other recipients of the Program a copy of the GNU General Public License along with the Program. Any translation of the GNU General Public License must be accompanied by the GNU General Public License.
  • If you modify your copy or copies of the program or any portion of it, or develop a program based upon it, you may distribute the resulting work provided you do so under the GNU General Public License. Any translation of the GNU General Public License must be accompanied by the GNU General Public License.
  • If you copy or distribute the program, you must accompany it with the complete corresponding machine-readable source code or with a written offer, valid for at least three years, to furnish the complete corresponding machine-readable source code.

Any of the above conditions can be waived if you get permission from the copyright holder.

Disclaimer
Disclaimer

The Commons Deed is not a license. It is simply a handy reference for understanding the Legal Code (the full license) — it is a human-readable expression of some of its key terms. Think of it as the user-friendly interface to the Legal Code beneath. This Deed itself has no legal value, and its contents do not appear in the actual license.

Creative Commons is not a law firm and does not provide legal services. Distributing of, displaying of, or linking to this Commons Deed does not create an attorney-client relationship.

This is a human-readable summary of the Legal Code (the full GNU General Public License). A Portuguese translation is also available.