FILE
	/usr/common/lib/exit.c

NAME
	is_lockable - query whether exit is lockable

PROTOTYPE
	int is_lockable(void)

CALLED BY
	Anybody

DESCRIPTION
	Returns true if the object is lockable, false otherwise.

	This function isn't access-protected.  You should access-protect
	your version of this and all other inherited functions, including
	upgraded() and destructed().

RETURN VALUE
	Whether the object is lockable.

ERRORS
	Usually none.

SEE ALSO
	is_container, is_open, is_locked, is_lockable