BoxWarning()

         Shows a warning in a light focus window

    Syntax:

         BoxWarning( xWarning ) -> Nil

         xWarning : Message to show on the screen. It may be a string or
                    a string array.

    Description:

         Opens up a focused light window showing a message. Wait until a
         key is pressed.

    Return:

         Nothing.

    Example:

         BoxWarning ( "Hello world" )
         BoxWarning ( { "Hello", "", "What are you doing?" } )