protected Set<String> handleKeySet() {
        return new HashSet<String>(Arrays.asList(
       		 //various
       		 "cancelKey",
       		 //Menus
       		 "open", "import", "save", "saveComp", "close",
       		 "edit", "undo", "redo",
       		 "view", "grid",
       		 "help", "about",
       		 //errors
       		 "errBigImage", "errPropImage", "errCantOpen", "errCantSave", "errSpriteHeight"));
    }