The text of the message to be displayed within the message-box window. If multiple lines are required, carriage- return characters must be inserted into the text at appropriate points. The text for the title should not be longer than 40 characters. If text longer than this is supplied, text centering is still performed, even though the beginning and end of the string are not visible. The text Error is to be displayed as the title of the message-box window.
Message box contains an OK pushbutton.
The first button is the default selection. The second button is the default selection. The third button is the default selection. This is the default case. Message box is system modal.