McDonald'sis tweaking the look of its menu and drive-thru ordering boards, highlighting items that weigh in at less than 400 calories...

Boards will be organized by calorie counts, segmenting items in calorie blocks. That means, for example, that under the heading 400 calories or less, consumers will see such items as medium fries, Filet-O-Fish sandwich and an Oreo McFlurry. For 300 calories or less, consumers can order a Southwest Salad or Strawberry Banana Real Fruit Smoothie.

"We want customers to understand that they have food that they love, but food that they can feel good about enjoying regularly," Golden said.

The campaign, known as "Favorites Under 400 Calories," starts Tuesday and will run in conjunction with the Summer Olympics.