Creative Commons Licence
A legal agreement / contract document.
A licence, in general, sets out the conditions you must agree to in order to install the software. You often see it turn up in the install process, where you have to click an "I agree" button to carry on with the installation.
A 'creative commons' licence was developed to allow 'Open Source' software to be distributed freely but with the provisio that you do not sell it on, as if it was your own property. The licence also insists that if you modify the source code to suit your own requirements, then that software must also be covered by the creative commons licence.
The idea it to allow anyone to use / modify open source software and then pass on the improvements to the rest of the Open source community so it benefits everyone.
Challenge see if you can find out one extra fact on this topic that we haven't already told you
Click on this link: Creative Commons Licence