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setTextMsg(0,"PROBE",10);
first parameter can be 0 or 1. 
0 - instant message for the duration of number of seconds (10),
1 - rollins message box with press enter to continue, in this case third parameter should be 0.
Second parameter is text message. It should have no limit because it passes a pointer to string to underlying function.
Third is a number of seconds to display a message in case first is set to 0.