Your TSO/E execs and CLISTs can send messages to the system operator by issuing the SEND command.If you specify a message identifier at the beginning of the message text, you can use SYS1.PARMLIB(MPFLSTxx) to process these messages. To process a message sent by the SEND command, a plus sign (+) must be placed before the message identifier when you specify it in MPFLSTxx (for example, "+MSG001I"). For more information on controlling message processing through MPFLSTxx, see and .