@@ -96,7 +96,7 @@ are a the ones that exist so far:
#### More on: "What Is Copyleft?"
Here are a few sources to read generally what copyleft is:
Here are a few external resources to read regarding the general concept of copyleft:
* [Richard M. Stallman's essay on copyleft at gnu.org](https://www.gnu.org/copyleft/)
* [The Wikipedia entry on Copyleft](http://en.wikipedia.org/wiki/Copyleft)