MQ_OVERVIEW (man7)
mq_overview − overview of POSIX message queues
mq_overview − overview of POSIX message queues
tcp − TCP protocol
sane − Scanner Access Now Easy: API for accessing scanners
posixoptions − optional parts of the POSIX standard
gitcredentials − Providing usernames and passwords to Git
regex − POSIX.2 regular expressions
man-pages − conventions for writing Linux man pages
kernel_lockdown − kernel image access prevention feature
uts_namespaces − overview of Linux UTS namespaces
groff_man − GNU roff macro package for formatting man pages