protected Set<String> handleKeySet() {
         return new HashSet<String>(Arrays.asList(
        		 //title of the application
        		 "title",
        		 //various
        		 "okKey", "cancelKey",
        		 //Menus
        		 "file", "open", "import", "save", "saveComp", "close",
        		 "edit", "undo", "redo",
        		 "view", "grid",
        		 "lang",
        		 "help", "about","aboutText",
        		 //labels
        		 "width", "height", "8x8", "8x16", "1x", "2x", "spr", "bkg",
        		 //errors
        		 "errBigImage", "errPropImage", "errCantOpen", "errCantSave", "errSpriteHeight"));
    }