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Linking - linking of the licensed code with code licensed under a different license (e.g. when the code is provided as a library)
Distribution - distribution of the code to third parties
Modification - modification of the code by a licensee
Patent grant - protection of licensees from patent claims made by code contributors regarding their contribution, and protection of contributors from patent claims made by licensees
Private use - whether modification to the code must be shared with the community or may be used privately (e.g. internal use by a corporation)
Sublicensing - whether modified code may be licensed under a different license (for example a copyright) or must retain the same license under which it was provided
Permissive: allows users to use, modify and distribute the software under certain conditions, without imposing any restrictions on the distribution of derivative works. This includes changing the licensing of the derivative work.
Copyleft: (aka “viral licensing” requires that any derivative works be licensed under the same terms as the original work. Developers have the right to use, modify and share the work and must make the code open for use by others.
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