Licensing.

Personal use

Unless a specific book page says otherwise, downloadable editions are intended for personal, non-commercial reading and home printing. A download does not transfer copyright or grant permission to resell, redistribute, upload or adapt the book.

Commercial use

Commercial licenses are planned but are not available yet. Do not assume that a personal-use download permits commercial use. Book-specific terms will be shown before a commercial license is offered.

Online reading

Reading a book on this site does not grant permission to copy or redistribute its text or illustrations. See the site terms for general site use.