man - format and display the on-line manual pages
 manpath - determine user's search path for man pages

 man [-acdfFhkKtwW] [-m system] [-p string] [-C con­
 fig_file] [-M path] [-P pager] [-S section_list] [section]
 name ...

 man formats and displays the on-line manual pages. This
 version knows about the MANPATH and (MAN)PAGER environment
 variables, so you can have your own set(s) of personal man
 pages and choose whatever program you like to display the
 formatted pages. If section is specified, man only looks
 in that section of the manual. You may also specify the
 order to search the sections for entries and which prepro­
 cessors to run on the source files via command line
 options or environment variables. If name contains a /
 then it is first tried as a filename, so that you can do
 man ./foo.5 or even man /cd/foo/bar.1.gz.

 MANPATH
 If MANPATH is set, its value is used as the path to
 search for manual pages.
 MANPL If MANPL is set, its value is used as the display
 page length. Otherwise, the entire man page will
 occupy one (long) page.
 MANROFFSEQ
 If MANROFFSEQ is set, its value is used to deter­
 mine the set of preprocessors run before running
 nroff or troff. By default, pages are passed
 through the table preprocessor before nroff.
 MANSECT
 If MANSECT is set, its value is used to determine
 which manual sections to search.
 MANWIDTH
 If MANWIDTH is set, its value is used as the width
 manpages should be displayed. Otherwise the pages
 may be displayed over the whole width of your
 screen.
 MANPAGER
 If MANPAGER is set, its value is used as the name
 of the program to use to display the man page. If
 not, then PAGER is used. If that has no value
 either, /usr/bin/less -is is used.
 Thus, the command `LANG=dk man 1 foo' will cause
 man to look for the foo man page in
 .../dk/man1/foo.1, and if it cannot find such a
 file, then in .../man1/foo.1, where ... is a direc­
 tory on the search path.
 NLSPATH, LC_MESSAGES, LANG
 The environment variables NLSPATH and LC_MESSAGES
 (or LANG when the latter does not exist) play a
 role in locating the message catalog. (But the
 English messages are compiled in, and for English
 no catalog is required.) Note that programs like
 col(1) called by man also use e.g. LC_CTYPE.
 PATH PATH is used in the construction of the default
 search path for man pages.
 SYSTEM SYSTEM is used to get the default alternate system
 name (for use with the -m option).

 apropos(1), whatis(1), less(1), groff(1).

 The -t option only works if a troff-like program is
 installed.
 If you see blinking \255 or <AD> instead of hyphens, put
 `LESSCHARSET=latin1' in your environment.

 If you add the line
 (global-set-key [(f1)] (lambda () (interactive) (manual-
 entry (current-word))))
 to your .emacs file, then hitting F1 will give you the man
 page for the library call at the current cursor position.
 To get a plain text version of a man page, without
 backspaces and underscores, try
 # man foo | col -b > foo.mantxt