And, since you appear to be the repo owner, don't link POSIX to linux.org as they are vastly different from one another; POSIX has its own specification https://pubs.opengroup.org/onlinepubs/9699919799/
Please edit your submission title to more accurately reflect its repo title "Awesome Open Standards" because the way it's phrased now it sounds like a blog post or something (q.v. https://news.ycombinator.com/newsguidelines.html )