+checks in a standard location for manual
+information (/usr/man). This can be changed by supplying a search
+path (a la the shell) with the
+.B \-M
+flag. The search path is a colon (`:') separated list
+of directories in which manual subdirectories may be found;
+e.g. ``/usr/local:/usr/man''.
+.hw MANPATH
+If the environment variable `MANPATH' is set,
+its value is used for the default path.
+If a search path is supplied
+with the
+.B \-k
+or
+.B \-f
+options, it must be specified first.
+.PP
+.I Man
+will look for the manual page in either of two forms, the nroff source or
+preformatted pages.
+If either version is available, the manual page will be displayed.
+If the preformatted version is available, and it has a more recent modify
+time than the nroff source, it will be promptly displayed.
+Otherwise, the manual page will be formatted with nroff and displayed.
+If the user has permission, the formatted manual page will be deposited
+in the proper place, so that later invocations of man will not need to
+format the page again.