protected App() {
		if (Platform.isMacintosh()) {
			Application app = Application.getApplication();
			app.setAboutHandler(AboutCommand.INSTANCE);
			app.setPreferencesHandler(PreferencesCommand.INSTANCE);
			app.setOpenFileHandler(OpenCommand.INSTANCE);
			app.setPrintFileHandler(PrintCommand.INSTANCE);
			app.setQuitHandler(QuitCommand.INSTANCE);
			app.setQuitStrategy(QuitStrategy.SYSTEM_EXIT_0);
			app.disableSuddenTermination();
		}
	}