Displays a message in a standard, single line form at the foot of the screen when the command is run in interactive mode. When run in non-interactive mode the text is sent to the output channel (For example in a batch job the message will be written to the log file). The message is the argument. The argument may be a littoral enclosed in quotes or may be a variable. N.B. Processing is not stopped when the message is displayed. If you want processing to stop then use the Pause command.