This module is invoked by running the CSGM system transaction.
If a satisfactory OPNDST has occurred (detected in the OPNDST exit, DFHZOPX) and if a "good morning" message has been requested on the TCT TYPE=TERMINAL entry, an NACP request is queued. NACP issues a DFHIC TYPE=INITIATE for this transaction.
This module determines the terminal type, sets up the appropriate control characters, gets a TIOA, and writes the message.
For a 3270 terminal, if the operator has entered data before the message has been received, NACP may be invoked to handle intervention required. In this case the transaction is abended and the write operation terminated.
A default message text is generated by DFHTCTPX and can be overridden by an option on the TCT TYPE=INITIAL statement. The text is stored in the TCT prefix.
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