Asus X515JA-EJ042T - Function Keys; Windows 10 Keys

Notebook PC E-Manual 37
Windows® 10 keys
There are two special Windows® keys on your Notebook PC’s keyboard
used as below:
Launches the Start menu
Displays the drop-down menu*
* On selected models
Function keys
Press to enable or disable the function keys feature.
When the function keys feature is enabled, you can also access HotKeys
by holding down in combination with the top row keys.