That were you Missunderstood, By using an open source Licence to released your stuff, It's Open source, It can be use in ANYTHING, James Cameron could come ,take your model and put it In Avatar 2 you wouldn't be able to say Something. Open Source Licenses don't allow you to change it, only to upload it to a new version of the licence. If you Say: "Port from FO3 to Nv require permission because I decided to change the terms of the licence", you are doing something illegal and the new Licence is non-existent, you say open source, it's open source. Ps:@Quetzlsacatanango: I may miss-said something, English is not my main language. I mean that he can use an open source licence, edit it, and release a new licence.