#TIL you can access manpages for POSIX-only APIs of sh and utilities through `man 1p <utility>`, provided that your system has POSIX manpages installed.

This is valuable when writing POSIX shell scripts or running POSIX-compliant commands.

#Guix does not come with POSIX manpages by default. But once I installed `man-pages-posix` and `man-db` packages, I could do `man 1p sed`!