So we can run the server, teach from it, and share it, you grant us a non-exclusive, worldwide, royalty-free, irrevocable licence to host, run, modify, adapt, publish, and distribute your contributions — including in this project's public code repositories, and including after you stop contributing. Others may then use your work under whatever licence that repository carries.

No payment, ever. This is a free educational space. Contributing never earns money, royalties, or compensation of any kind, now or later.