SET MESSAGES WINDOW
Activates or deactivates the use of the message window for system messages.
SET MESSAGES WINDOW ON|OFF
The MESSAGES WINDOW option is set OFF by default.
When MESSAGES WINDOW is OFF, system messages are displayed line-by-line in the application window (BACKSCREEN). By setting MESSAGES WINDOW ON, you enable a pop-up window for the display of all system messages that are not currently suppressed.