private void saveProgress() {
		if(modified && fileName != null) {
			if(JOptionPane.YES_OPTION == JOptionPane.showConfirmDialog(frame
				,new JLabel("Save progress with " + fileName + " ?")
				,"Unsaved Progress"
				,JOptionPane.YES_NO_OPTION
			)) {
				saveToFile(fileName);
			}
		}
	}