Messages to the operator—DFHCLT TYPE=WTO

These two instructions define a message that is written to the system operator.

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>>-DFHCLT--TYPE=WTO--,WTOL=addr--addr--WTO---------------------->

>--'message to operator'--+-------------------+----------------->
                          '-,ROUTCDE=(number)-'   

>--+----------------+--,MF=L-----------------------------------><
   '-,DESC=(number)-'          

WTOL=addr
Specifies the address of a list format WTO macro that defines the message and any associated route codes and descriptor codes.

The MF (macro format), ROUTCDE (routing code), and DESC (descriptor) operands of the WTO macro are described in the z/OS MVS Programming: Authorized Assembler Services Reference ALE-DYN manual.

An example is to send a request to the operator:
          DFHCLT TYPE=WTO,
                WTOL=wtoad
wtoad     WTO   'switch local terminals, please',
                 MF=L