Section: Manual pager utils (1)
If $MANPATH is set, manpath will simply display its contents and issue a warning. If not, manpath will determine a suitable manual page hierarchy search path and display the results.
-m system [,...], --systems=system[,...]
:If this system has access to other operating system's manual hierarchies, this option can be used to include them in the output of manpath. To include NewOS's manual page hierarchies use the option -m NewOS.
The system specified can be a combination of comma delimited operating system names. To include the native operating system's manual page hierarchies, the system name man must be included in the argument string. This option will override the $SYSTEM environment variable.
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