VIEWSONIC VS13394 - Manual (Page 28)

Using the Buttons
The hardware keys offer basic functions allowing easy
operation of this device.
Name Function
Power Switch
Switch the system on and off
Home Button
Return to home screen
Back Button
Retraces your steps on the eBook
Page up Button
Takes you to the next page in your reading
material.
Page down Button
Takes you to the previous page in your reading
material.