# About This Guide This guide is generated from markdown text files using the mdBook tool. The source is mirrored on Github at <https://github.com/internetarchive/fatcat>. Contributions and corrections are welcome! If you create a (free) account on github you can submit comments and corrections as "Issues", or directly edit the source and submit "Pull Requests" with changes. This guide is licensed under a Creative Commons Attribution (CC-BY) license, meaning you are free to redistribute, sell, and extend it without special permission, as long as you credit the original authors.