Similar to the Wii, the Nintendo 3DS has a “Home” button. Pressing it takes you to the system’s Home menu, even if you’re in the middle of the game. Unlike the Wii, however, the 3DS can multi-task.
From the Home menu, you can choose to suspend your game and open up the system’s Internet browser (which will be made available in May) to browse the web. The Home menu also allows you to access your Friend List and an application called Game Notes.
Game Notes allows you to take notes on the 3DS touchscreen while a game is suspended. The top screen of the 3DS will display either a screenshot the top screen of the game, or both the top and bottom screens shrunk down to fit. You can switch between either. Notes taken using the Game Notes app can then be saved to the SD card.