
	-a		Request an acknowledgment of delivery (NAK if timeout).
	-c		Send CRC check on data.
	-d		Don't allow message to trigger auto-call links.
	-i		Ignore address errors if at least one ok.
	-q		Report unique message ID on stdout.
	-m		Don't split message into parts (SU only).
	-n		Don't inform recipient of delivery.
	-o		Don't optimise message queueing by size.
	-r		Don't return message on error.
	-s		Don't output warning messages.
	-u		Don't give argument usage message on argument errors.
	-x		Set reverse charging for message (SU only).
	-		Read data for message from `stdin'.
	-F <file>	Unambiguous file name for data.
