Open System Services Management and Operations Guide (G06.30+, H06.08+, J06.03+)

coreutils/share/man directory must precede /usr/share/man in the MANPATH environment
variable, as in the following example:
export MANPATH=/usr/coreutils/share/man:/usr/share/man
For more information about viewing OSS reference pages, see “Controlling Reference Page
Searches and Display” (page 237).
OSS Core Utilities User Commands 245