Samsung NP540U4E-K01US - Manual (Page 53)

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Chapter 3.
Using the computer
Other Function Keys (Optional)
Performs the right-click mouse function (touchpad).
+
Ctrl
or
If you press the Fn Lock key, you can use the hot key functions
without pressing the Fn key.
or
If the hot keys do not work properly, you have to install the
Settings.
Keyboard