The MESSAGE command allows user messages to be included in interactive macros. Lines of text are defined and finished with the user escape (). The message will appear on the graphics system. This is normally used within macros.
Here is a very simple example of the MESSAGE command:
Main menu: ENTER COMMAND [DEFINE VARIABLE]:message INFO: Enter message text or user escape (\\) to exit TEXT: TEXT:Hello World TEXT: TEXT:\\
The line ``Hello World'' will appear in the middle of the graphics screen.