Michael Kerrisk (man-pages) dixit: >I think quoting POSIX is fine (fair use etc.) “fair use” only applies to the USA. For pieces quoted under USA “fair use” copyright still applies in all other countries, and, worse, you can’t issue a licence for it (as you don’t own it). https://pubs.opengroup.org/onlinepubs/9699919799/frontmatter/notice.html specifically reserves the copyright for POSIX. https://pubs.opengroup.org/onlinepubs/9699919799/help/terms.html specifically does not issue a licence for reproduction. I know that some POSIX documents were re-released under a free-ish licence some time ago for inclusion into some manual pages, but I don’t have a reference for that and don’t know the scope. Please get explicit permission from The Open Group before quoting from POSIX in anything you intend to distribute to the general public. Thanks, //mirabilos (current hat: Debian Developer nōn-US) -- I believe no one can invent an algorithm. One just happens to hit upon it when God enlightens him. Or only God invents algorithms, we merely copy them. If you don't believe in God, just consider God as Nature if you won't deny existence. -- Coywolf Qi Hunt