# Document license

All rights reserved.

The permissions given by the copyleft license are indicated below.

Copyright (c) 2007 2i2L Sarl. Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation ; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled "GNU Free Documentation License".

The contents of this tutorial is available under the **copyleft** license:

[GNU FDL](http://www.gnu.org/licenses/fdl.txt) : <http://www.gnu.org/licenses/fdl.txt>

and

[CC-BY-SA](http://creativecommons.org/licenses/by-sa/2.0/fr/) : <http://creativecommons.org/licenses/by-sa/2.0/fr/>

In the dynamic of a Free and Open community, any corrections or modifications of this tutorial are welcome at <info@chamilo.org>.