What Can Copyleft Be Applied To?
The concept of copyleft is central to many programming projects, and the license is most commonly used for software, digital art, writings, and other creative content.
Is copyleft only for software?
The GNU GPL states that it “applies to any program or other work which contains a notice placed by the copyright holder saying it may be distributed under the terms of this General Public License,” so this “Program,” then, may not necessarily be a computer software program—any work of any nature that can be copyrighted ...
Applying Copyleft To Non-Software Information - GNU Project
What does copyleft apply to?
Copyleft is a general method for making a program (or other work) free (in the sense of freedom, not “zero price”), and requiring all modified and extended versions of the program to be free as well. The simplest way to make a program free software is to put it in the public domain, uncopyrighted.
What is Copyleft? - GNU Project - Free Software Foundation
What is an example of copyleft?
Copyleft is a term, usually referring to a license, used to indicate that such license requires that redistribution of said work is subject to the same license as the original. Examples of copyleft licenses are the GNU GPL (for software) and the Creative Commons SA (Share Alike) licenses (for works of art).
Copyleft - MDN Web Docs Glossary: Definitions of Web-related terms
What is the importance of copyleft? Copyleft provides an incentive for creative people to improve innovations. For example, if someone composes a tune with a copyleft policy, other musicians can make changes so that you get varied and improved versions. The same applies to any other creative piece of work.
Understanding importance of Copyleft | IPTSE