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man page

alt. A helpfile in Unix and Unix-like operating systems n. A helpfile in Unix and Unix-like operating systems

Wikipedia
Man page

A man page (short for manual page) is a form of software documentation usually found on a Unix or Unix-like operating system. Topics covered include computer programs (including library and system calls), formal standards and conventions, and even abstract concepts. A user may invoke a man page by issuing the man command.

By default, man typically uses a terminal pager program such as [[more (command)|more]] or [[less (Unix)|less]] to display its output.