Specifies the format of messages when displayed at a terminal.
This common end-user parameter is applicable to these control statements: SYSTEM (see SYSTEM statement), PROFILE (see PROFILE statement), USER (see USER statement), and TERMINAL (see TERMINAL statement).
Yes or ON causes messages to be displayed in full at all terminals with the code and text.
When No or OFF is in effect, only the message text is displayed.
The IBM Session Manager user-associated variable t_msgid may be used to refer to the value of the message format; for details, see the Panels, Scripts and Variables manual.