Using the Edge Functions on the Windows 8.1 Screen
Use the tools on the edge of the Windows 8.1 screen to get to certain places in the system. Mostly hidden, you can make the tools appear with your finger, mouse, or keyboard:
Charms bar: On the right edge of the screen, the Charms bar displays five charms (buttons, if you will): Search, Share, Start, Devices, and Settings.
App switcher: On the left edge of the screen, the app switcher makes it easy to switch between apps and the Start screen.
Snap: If your screen supports this feature, you can snap an app to the left or right to use two, three, or four apps at once.
App bars: On the top or bottom of the screen (sometimes both places), the app bars provide useful app-specific functions.