Alternate GPL reading

# Alternate reading

### A Newbie’s Guide to the GPL and WordPress Licensing
- https://ivycat.com/a-newbies-guide-to-the-gpl-and-wordpress-licensing/

##### The Free Software Definition’s Four Freedoms
By the Free Software Foundation’s definition, Free Software guarantees you:

1. The freedom to run the program, for any purpose.
2. The freedom to study how the program works, and change it so it does your computing as you wish.
3. The freedom to redistribute copies so you can help your neighbor.
4. The freedom to distribute copies of your modified versions to others.

##### The GPL and Copyleft
- The GPL was first released in 1989 by Richard Stallman and the Free Software Foundation, which he founded with a mission to protect the freedoms to create, modify and distribute software under what he called copyleft terms.
- Copyleft, an obvious play on copyright allows you to, not only make your work free (as in speech), but to ensure that any modified versions will also be free.
- For a legal document, the GPL is surprisingly easy to read and anyone that uses software licensed under GPL should understand it, or at least read it once. Yep, that most likely means you.
- Really, the gist of the GPL follows the Free Software Definition’s “Four Freedoms,” with the addition of copyleft.

> Using the GNU GPL will require that all the released improved versions be free software. This means you can avoid the risk of having to compete with a proprietary modified version of your own work. – “Why Use the GPL”