The script along with all of its arguments, separated by spaces.
port
A private or public port the created message will be replied to when script execution terminates.
suffix
file name suffix of the script. If NULL, then "REXX" is assumed.
in
input file handle supplied to the script.
out
output file handle supplied to the script.
RESULT
msg
a message that has already been send to the Rexx master for execution. If this message is retrieved on the port provided as argument, then execution is complete.