The way by which you close apps changes with Windows 8. In
some cases, you don’t close an app, you just return to the Start
screen by pressing the Windows logo key on your keyboard
or by clicking the Start screen charm. In others, especially with
more traditional desktop applications, you click the standard
Close button. Finally, with apps such as Weather and Maps, you
can drag (or swipe if you have a touchscreen) downward to
close an app.
Close an App
1 With a desktop application open,
such as WordPad, click the Close
2 With a Start screen app open, such as
Weather, click the top of the screen
and drag downward.
If you haven’t saved a document in step 1,
you might be asked to save it before you
close the application.