FREEDOM 0 - Run the program as you wish
"Run in whatever computer you wish, in as many as you wish. Do whatever you wish with it, in whatever fashion you wish. For whatever purpose"
FREEDOM 1 - Change the program as you wish
"Freedom to change the source code so that the program functions precisely as you wish and does your computing the way you want it to do"
FREEDOM 2 - Redistribute the program as you wish
"Freedom to make exact copies and give or sell them to others when you wish"
FREEDOM 3 - Redistribute the program with the changes you did
"Freedom to make copies of your modified versions and give or sell when you wish"
