Slide 12 of 27 - The COMMAND port refers to AmigaDOS, so Shell commands sent here are executed as if typed into a Shell. - Optionally, the script can wait for a reply from a host. This is normally instand, and the result stored in the special RESULT variable (error codes are stored in the RC variable). However, if the host doesn't reply, your script will be suspended until it does. Therefore, by default, ARexx scripts don't wait for a reply unless the OPTIONS RESULTS command is included.