Permission notice for this original reference package

You may use, study, copy, modify, combine, and redistribute these original
source files and synthetic fixtures, including commercially, if you retain
this notice and clearly distinguish your changes from the supplied reference.

The materials are provided without a promise of correctness, fitness, support,
or warranty. They deliberately include the documented starter defects. Users
are responsible for evaluating any use and obtaining their own operational
authority. This notice grants no rights in third-party names or materials.
