License

δωρεὰν ἐλάβετε, δωρεὰν δότε.

The website, this documentation, the books produced, and all of the code for the aforementioned is released into the public domain under the CC0 1.0 Universal license.

This means that everything in this website is free. We hope that it's useful.

Legally, you shouldn't sell books that you produce with this website. If you print the books and charge people for the printing and the binding, then that's fine.