(Not documented in 4.0, but present in 3.1)

Declaration

AskMsgNumber(question : Text; title : optional text; 
             maxText : optional positive ; default : optional numeric)

Description

Shows a message box with specified title, question and a textbox containing the default value, if any. It returns the number entered by the user into the text box. If no default is entered and no number is entered, returns NaN.