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Is the GPL a license from the developer?
Strictly speaking, the GPL is a license from the developer for others to use, distribute and change the program. The developer itself is not bound by it, so no matter what the developer does, this is not a “violation” of the GPL.
Can a modified version of the GPL be distributed?
No. The GPL says that your modified versions must carry all the freedoms stated in the GPL. Thus, anyone who receives a copy of your version from you has the right to redistribute copies (modified or not) of that version. You may not distribute any version of the work on a more restrictive basis.
Is the X11 license compatible with the GPL?
No. The X11 license is compatible with the GPL, so you can add a module to the GPL-covered program and put it under the X11 license. But if you were to incorporate them both in a larger program, that whole would include the GPL-covered part, so it would have to be licensed as a whole under the GNU GPL.
How does an IDS work without a license?
IDS – Activating a License. IDS will work without a license, but Vehicle Communications will not. When There is No License. When you do not have a license IDS screen prompts will notify you that you do not have one and give you the option to get one by taking you to the following screen:
Can a module be released under the GPL?
The GPL says that the whole combined program has to be released under the GPL. So your module has to be available for use under the GPL. But you can give additional permission for the use of your code. You can, if you wish, release your module under a license which is more lax than the GPL but compatible with the GPL.
Can you sell a modified version of the GPL?
You are allowed to sell copies of the modified program commercially, but only under the terms of the GNU GPL. Thus, for instance, you must make the source code available to the users of the program as described in the GPL, and they must be allowed to redistribute and modify it as described in the GPL.