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    IsNum()

         Determines if the Num lock key is active

    Syntax:

         IsNum( [ lNew ] ) -> lActive

         lNew : a logic value with the new state of Num lock key

    Description:

         Determines if the Num lock key is active returning a logic value.

    Return:

         A logic value indicating if is active or not.

    Example:

         If IsNum()
           Warning ( "Numeric pad is active" )
         EndIf