Z:gnu-www-ja-byte-interview--29941f-=3Cstrong=3EStallman=3C/strong=3E: I d/en

Stallman : I do this by copyrighting the programs and putting on a notice giving people explicit permission to copy the programs and change them but only on the condition that they distribute under the same terms that I used, if at all. You don't have to distribute the changes you make to any of my programs&mdash;you can just do it for yourself, and you don't have to give it to anyone or tell anyone. But if you do give it to someone else, you have to do it under the same terms that I use.