The Food and Drug Administration on Tuesday announced new rules requiring chain restaurants, movie theaters and other retailers that sell prepared foods to put calorie labels on menus and menu boards. The rules will only apply to establishments that have 20 or more locations. What will be labeled includes menu items at chain restaurants, drinks on menus and soda dispensers, some alcoholic beverages on menus and most prepared foods in supermarkets just to name a few. Some foods that won't be labeled with calorie information include menu items at independent restaurants with fewer than 20 outlets, seasonal or daily specials at chain restaurants and anything that isn't on a menu at a chain restaurant, such as a bread basket or drinks at the bar. The new rules will take effect a year from now, and are likely to face legal and political challenges from some parts of the food industry.