MESSAGE
   testLogical( FALSE, FALSE ) SKIP(1)
   testLogical( FALSE, TRUE ) SKIP(1)
   testLogical( TRUE, FALSE ) SKIP(1)
   testLogical( TRUE, TRUE ) SKIP(2)

   testLogical( ?, ? ) SKIP(1)
   testLogical( ?, FALSE ) SKIP(1)
   testLogical( ?, TRUE ) SKIP(1)
VIEW-AS ALERT-BOX.