Slide 13 of 27 - The ADDRESS command tells ARexx which host messages should be sent to - Any line that ARexx can't understand will be treated as a message and sent to the current host - The entire message may be put in quotes, in which case ARexx won't try to interpret it first, and instead will send it directly to the host. This saves a little time as well as preserving the contents of the message from ARexx's internal capitalisation.