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This allows course authors to choose between two difference licenses for their course content: All Rights Reserved, or Creative Commons. In the backend, XBlocks that wish to allow custom licenses need only inherit from LicenseMixin, which adds a `license` field as a string. License information is displayed in the Studio editor view, and just below the rendered XBlock in the LMS. In addition, if the course block itself has a custom license set, this license will display just below the main body of the page on courseware pages. This entire feature is gated behind the LICENSING feature flag.
OpenEdx ------- This is the root package for Open edX. The intent is that all importable code from Open edX will eventually live here, including the code in the lms, cms, and common directories. Note: for now the code is not structured like this, and hence legacy code will continue to live in a number of different packages. All new code should be created in this package, and the legacy code will be moved here gradually.