> For the complete documentation index, see [llms.txt](https://xoops.gitbook.io/xoops-operations-guide/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://xoops.gitbook.io/xoops-operations-guide/the-admin-interface/modules/acquiring-a-module/copyrights-and-gpl-notices.md).

# Copyrights and GPL notices