GMTEXT

The GMTEXT system initialization parameter specifies whether the default logon message text (WELCOME TO CICS) or your own message text is to be displayed on the screen.

GMTEXT={'DFHZC2312 *** WELCOME TO CICS ***'|'text'}
The message text can be displayed by the CSGM (good morning) transaction when a terminal is logged on to CICS through z/OS Communications Server, by the CESN transaction if used to sign on to CICS, or by your own transactions using the EXEC CICS INQUIRE SYSTEM GMMTEXT command.
You can use apostrophes to punctuate your message, in addition to using them as message delimiters. However, you must code two successive apostrophes to represent a single apostrophe in your text. For example,
GMTEXT='User''s logon message text.'

The whole message must still be enclosed by a pair of single delimiting apostrophes.

Your message text can be from 1 through 246 characters (bytes), and can extend over two lines by extending the text to column 80 on the first line, and continuing in column 1 of the second line. For example, the following might be used in the SYSIN data set:
*           CICS Transaction Server for z/OS, Version 5 Release 2 SYSTEM    *
GMTEXT='An Information Development CICS Terminal-Owning Region (TOR) - C
ICSIDC. This message is to show the use of continuation lines when creating a GM
TEXT parameter in the SYSIN data set'  (for first signon
The CSGM transaction displays this as follows (with the time appended to the end of message):
 An Information Development CICS Terminal-Owning Region (TOR) - C
 ICSIDC. This message is to show the use of continuation lines when creating a GM
 TEXT parameter in the SYSIN data set 09:56:14
The CESN transaction displays this as follows:
 Signon for CICS Transaction Server for z/OS, Version 5 Release 2 APPLID CICSHTH1

An Information Development CICS Terminal-Owning Region (TOR) - CICSIDC.
This message is to show the use of continuation lines when creating a GMTEXT
parameter in the SYSIN data set

For any transaction other than CESN that displays the text specified by this parameter, you must use a TYPETERM with LOGONMSG(YES) for all terminals requiring the logon message. For information about using TYPETERM, see Autoinstalling model terminal definitions.