c47439d4_of_Windows_8_Keyboard_Shortcut__Description
[Keyboard Shortcut] Win+Tab / Win+Shift+Tab [Description] 
Cycles through Metro/Modern apps. The "Shift" key indicates, as usual, reverse order. In Windows 7, this triggered a feature called "Aero Flip," which flipped through open windows in a three-dimensional plane.
Useful List of Windows 8 Keyboard Shortcut
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