Even tho most parts of E-Xoops are licensed under the terms of the GPL license, certain parts may be sublicenced under different licenses (such as modules, themes, classes, etc).

Please refer to credits.txt or the individual packages for more information. Also see: /LICENSES/E-Xoops.txt

As a theme, module, or class developper we grant you full rights to create proprietary addons (not core integrations) for which you may or not at your choice charge a certain fee.

In no event shall E-Xoops fall under your licensing terms, nor shall your addition fall under the licensing terms of E-Xoops. Each will keep it's own type of licensing.

In case of licensing incompatibilities:
If the original package author wishes so (and the package in question permits this), then a (LGPL/BSD/Mozilla/PHP) type license should apply to the package in question (GPL is possible, but is NOT the prefered license of E-Xoops :: imposes too many restrictions). Otherwise E-Xoops's LGPL type license takes precedence.

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The above has absolutely no impact for the end user. It however does mean that E-Xoops may not include your proprietary packages without your permission, and you may neither redistribute E-Xoops proprietary packages without our permission.

We would simply like to grant you non-exclusive rights to make use of internal api functions as to be able to develop commercial grade addons, without compromising E-Xoops, nor whatever you have developped.

Just because a product is based on GPL, does not mean that "you as a developper" should create everything under the GPL license too.

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In case of doubt or questions, please contact us at www.e-xoops.com
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Exeptions:
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All following files have no copyright due to their nature:
(files only containing generic reusable code, common to all parts:
ie. simple configuration settings, simple includes, etc ..no routines)

*/header.php
*/footer.php
*/admin_header.php
*/admin_footer.php
*/xoops_version.php
*/config.php

mainfile.php
common.php

Any files containing classes/functions or phpcode that generate any
type of output or proccesses instructions (outside the scope of above
mentioned files) have copyrights which depend soley on their creators.

Including, but not limited to:
Base module files: user/system, classes/functions/includes
Themes
Language Translations