Free software is software which preserves the freedom of users to modify and share software. We recognise these four rights that you, as a user of the software, must have:
- 0. The freedom to run the program, for any purpose.
- 1. The freedom to study how the program works, and adapt it to your needs.
- 2. The freedom to redistribute copies so you can help your neighbour.
- 3. The freedom to improve the program, and release your improvements to
the public, so that the whole community benefits.