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A New York appeals court on Thursday allowed New York City to enforce a new rule requiring chain restaurants to post warnings on menu items high in sodium.

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The Appellate Division, First Department, lifted an interim order from February that held off enforcement of the rule. Violators will be subject to $200 fines. The rule, believed to be the first of its kind in the United States, requires city restaurants with 15 or more locations nationwide to post a salt shaker encased in a black triangle as a warning next to menu items with more than 2,300 milligrams of sodium, the daily limit recommended by the federal government.