Acer Aspire E1-771 - Manual (Page 16)

16 - Using the keyboard
Windows keys
The keyboard has two keys that perform Windows-specific functions.
Key Description
Windows key
Pressed alone it returns to the Start screen or to
return to the last open app.

It can also be used with other keys for special
functions, please check Windows Help.
Application key
This key has the same effect as clicking the right
mouse button; it opens the application's context
menu.