public String help() {
		String feedback = " ";
		isHelpValid = true;
		if (Data.getDescription() != null) {
			String cmd = Data.getDescription().toLowerCase();
			if (cmd.equals("add") || cmd.equals("delete") || cmd.equals("change") || cmd.equals("search") 
					|| cmd.equals("complete") || cmd.equals("goto") || cmd.equals("")) {
				isHelpValid = true;
			} else {
				isHelpValid = false;
				feedback = "User command not recognized, please try again!";
			}
		}
		return feedback;
	}