This file is licensed under Creative CommonsAttribution 2.5 License
In short: you are free to distribute and modify the file as long as you attribute its author(s) or licensor(s).
This file is licensed under the Creative CommonsAttribution ShareAlike 2.5 License. In short: you are free to share and make derivative works of the file under the conditions that you appropriately attribute it, and that you distribute it only under a license identical to this one. Official license