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# Licensing
## Disclaimer
This documentation page only covers the most important licensing question. If you want to read more about the GNU General Public License Version 3, [read this](https://www.gnu.org/licenses/gpl-faq.html).

## Note
Under a **modified CORE copy** we understand a CORE installation that has been modified in any way. The configuration file `config.gd` is excluded.

## What happens when the license is violated against?
We'll contact the person/organisation doing that. If they won't take it down or can't be contacted, we'll send a cease and desist letter or contact a lawyer.

## Can I use CORE inside of my proprietary application or game?
No, you are not allowed to do that. Your project must be open source. [Read more...](https://www.gnu.org/licenses/gpl-faq.html#GPLInProprietarySystem)

## Do I need to publish a modified CORE copy?
If your project is private, no. But if you are publishing or sharing a application/game that uses a modified CORE copy, **you are required** to publish the modified CORE code under the GNU General Public License v3. [Read more...](https://www.gnu.org/licenses/gpl-faq.html#GPLRequireSourcePostedPublic)

## Can I change the license of my CORE fork?
No, you can't. You are not allowed to do that. [Read more...](https://www.gnu.org/licenses/gpl-faq.html#HeardOtherLicense)

## Can I sell my CORE fork?
Yes, but you are required to publish the source code under the GNU General Public License version 3. [Read more...](https://www.gnu.org/licenses/gpl-faq.html#GPLCommercially)