BoxQuery()

         Makes a query and returns a logic value

    Syntax:

         BoxQuery( cQuery ) -> lRespuesta

         cQuery : Question to show in the box

    Description:

         Asks a question using a focused light window and returns a logical
         value.

    Return:

         A logical value, according to the answer.

    Example:

         If BoxQuery ( "Do you want to exit? (Y/N)" )
           Warning( "Exiting..." )
         EndIf