public static Environment getEnvironment(byte e) {
	switch (e) {
	case 'W':
	case 'w':
	    return WINDOWS;
	case 'L':
	case 'l':
	    return LINUX;
	case 'M':
	case 'm':
	case 'O':
	case 'o':
	    return MAC;
	default:
	    throw new IllegalArgumentException();
	}
    }