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−-*- outline -*-
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−
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−* Man sections.
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−
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−  1 Executable programs or shell commands.
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−  2 System calls (functions provided by the kernel).
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−  3 Library calls (functions within program libraries).
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−  4 Special files (usually found in /dev).
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−  5 File formats and conventions eg /etc/passwd.
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−  6 Games.
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−  7 Miscellaneous (including macro  packages  and  conventions).
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−  8 System administration commands (usually only for root).
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−
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−* Invoking man.
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−
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−** Search for prog, func, conf file.
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−
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−  $ man [<section>] <item>
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−
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−** Search by specific keywords.
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−
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−  $ man -k <keywords>
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−
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−** Throw Emacs.
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−
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−  M-x man RET [<section>] <item>
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−
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−  M-x man RET -k SPACE <keywords>
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−
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−* Sections order.
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−
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−NAME                - brief prog description
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−SYNOPSIS (USAGE)    - command line options in BNF
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−DESCRIPTION         - long prog description
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−OPTIONS             - long option descriptions
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−... misc sections ...
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−EXAMPLES
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−EXIT STATUS
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−ENVIRONMENT
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−AVAILABILITY        - whare search source, where home page
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−FILES               - list of files that has effect on program working
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−AUTHORS
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−COPYRIGHT
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−SEE ALSO
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−BUGS                - know issue, how report bug
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−HISTORY
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−
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−* Man page showing.
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−
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−TODO
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−Bolt by print char, back one char and print same char.
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−Underscore by printing undescore, back one char and print char.