-*- mode: outline; coding: utf-8; -*-

* Man sections.

  1 Executable programs or shell commands.
  2 System calls (functions provided by the kernel).
  3 Library calls (functions within program libraries).
  4 Special files (usually found in /dev).
  5 File formats and conventions eg /etc/passwd.
  6 Games.
  7 Miscellaneous (including macro  packages  and  conventions).
  8 System administration commands (usually only for root).

* Invoking man.

** Search for prog, func, conf file.

  $ man [<section>] <item>

** Search by specific keywords.

  $ man -k <keywords>

** Throw Emacs.

  M-x man RET [<section>] <item>

  M-x man RET -k SPACE <keywords>

* Sections order.

NAME                - brief prog description
SYNOPSIS (USAGE)    - command line options in BNF
DESCRIPTION         - long prog description
OPTIONS             - long option descriptions
... misc sections ...
EXAMPLES
EXIT STATUS
ENVIRONMENT
AVAILABILITY        - whare search source, where home page
FILES               - list of files that has effect on program working
AUTHORS
COPYRIGHT
SEE ALSO
BUGS                - know issue, how report bug
HISTORY

* Man page showing.

TODO
Bolt by print char, back one char and print same char.
Underscore by printing undescore, back one char and print char.

* Development tools.

To preview local man page:

  $ groff -man -Tascii foo.1            # 7-bit char
  $ groff -man -Tlatin1 foo.1           # 8-bit char
  $ groff -man -Tlatin1 foo.1 | less
  $ groff -a -mandoc -Tlatin1 e.1
  $ groff -man -Tutf8 foo.1

  $ man ./foo.1                         # if slashes in path - use file

  $ mkdir man1
  $ cp foo.1 man1
  $ man -M . 1 foo                      # without slashes search in MANPATH item
                                        # and add /man1 to each item

* Output format.

** .txt.

  $ man foo | col -b >.foo.txt

** .ps.

  $ groff -Tps foo >foo.ps

** .ps.

  $ groff -Tps foo >foo.ps

** .dvi.

  $ groff -Tdvi foo >foo.dvi