Sir, – In response to the claims made by various lobby groups (Home News, July 5th) that listing the calorie content of meals on menus would be time-consuming and prohibitively expensive, let me point out that a quick web search reveals no shortage of websites and smartphone apps where one can compute the calorie content of practically any meal imaginable by picking ingredients and specifying their quantities. It takes only a few seconds and costs nothing. – Yours, etc,