2 

     3 * Man sections.

     4 

     5   1 Executable programs or shell commands.

     6   2 System calls (functions provided by the kernel).

     7   3 Library calls (functions within program libraries).

     8   4 Special files (usually found in /dev).

     9   5 File formats and conventions eg /etc/passwd.

    10   6 Games.

    11   7 Miscellaneous (including macro  packages  and  conventions).

    12   8 System administration commands (usually only for root).

    13 

    14 * Invoking man.

    15 

    16 ** Search for prog, func, conf file.

    17 

    18   $ man [<section>] <item>

    19 

    20 ** Search by specific keywords.

    21 

    22   $ man -k <keywords>

    23 

    24 ** Throw Emacs.

    25 

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

    27 

    28   M-x man RET -k SPACE <keywords>