man.conf —
    configuration file for man
This is the configuration file for the
    man(1),
    apropos(1),
    and
    makewhatis(8)
    utilities. Its presence, and all directives, are optional.
This file is an ASCII text file. Leading whitespace on lines,
    lines starting with ‘#’, and blank lines are ignored. Words
    are separated by whitespace. The first word on each line is the name of a
    configuration directive.
The following directives are supported:
  - manpathpath
- Override the default search path for
      man(1),
      apropos(1),
      and
      makewhatis(8).
      It can be used multiple times to specify multiple paths, with the order
      determining the manual page search order.
    Each path is a tree containing subdirectories whose names
        consist of the strings ‘man’ and/or ‘cat’
        followed by the names of sections, usually single digits. The former are
        supposed to contain unformatted manual pages in
        mdoc(7)
        and/or
        man(7)
        format; file names should end with the name of the section preceded by a
        dot. The latter should contain preformatted manual pages; file names
        should end with ‘.0’.
 Creating a
        mandoc.db(5)
        database with
        makewhatis(8)
        in each directory configured with manpathis
        recommended and necessary for
        apropos(1)
        to work, and also for
        man(1)
        on operating systems like OpenBSD that install
        each manual page with only one file name in the file system, even if it
        documents multiple utilities or functions.
 
- outputoption [value]
- Configure the default value of an output option. These directives are
      overridden by the -Ocommand line options of the
      same names. For details, see the
      mandoc(1)
      manual.
The following configuration file reproduces the defaults:
    installing it is equivalent to not having a man.conf
    file at all.
manpath /usr/share/man
manpath /usr/X11R6/man
manpath /usr/local/man
 
A relatively complicated man.conf file
    format first appeared in 4.3BSD-Reno. For
    OpenBSD 5.8, it was redesigned from scratch, aiming
    for simplicity.