On this screen, you can see a consolidated view of periods of your day - blood glucose, carbs, insulin, exercise, medications and other trackers - in chronological order.
You can move to other day periods by swiping the screen left and right. The current period displayed on the screen is indicated in the title bar.
The menu button in the top right corner lets you quickly log BG, foods, and medications without leaving the screen.
Also, you can use the left and right arrows of the day navigation bar to move between days.
The Weekly button at the bottom toolbar shows a weekly view of the same information, also grouped into day periods.