public static OpenFile loadExistingFile(String filename) {
		ArrayList<String> lines = new ArrayList<String>();
		try {
			Scanner infile = new Scanner (new File(filename));
			while (infile.hasNextLine()) {
				lines.add(infile.nextLine());
			}
			infile.close();
		} catch (FileNotFoundException e) {
			System.out.println("Error reading file: " + filename);
		}
		return new OpenFile(filename, lines);
	}