What is the GPL?
The GPL (GNU Public License) is the license that Plone is distributed under, and it governs what you can and can’t do with the Plone code. Very shortly summarized, it says that you have to release any changes you make to the code base back to the Plone community if you are redistributing Plone. There are a number of additional questions arising from this however – so we’ve tried to answer most of them in this document.
