FILE
	/usr/common/sys/exitd.c

NAME
	direction_by_string - take a direction name as a string and return
	a numerical direction, recognized by ExitD.

PROTOTYPE
	int direction_by_string(string direction_name)

CALLED BY
	Anybody

DESCRIPTION
	Take a string naming a direction, such as "nw" or "up" or
	"northeast", and return a numerical direction recognized by
	ExitD.  Direction numbers are defined in <exit.h>.

RETURN VALUE
	A numerical direction, or -1 if the string isn't recognized.

ERRORS
	Normally none.

SEE ALSO
	get_short_for_dir, direction_by_string, opposite_direction