
	-c	Read commands from `stdin'.
	-e	Ignore CRC errors in statefiles.
	-i	Read statefile from `stdin'.
	-o	Write statefile to `stdout'.
	-n	Don't broadcast changes.
	-q	Address and comment on stdout.
	-r	Update routefile.
	-s	Update statefile.
	-w	Complain about irregularities.
	-x	Force rewrite of `exportfile'.
