VIEWSONIC VS13394 - Manual (Page 59)

Setting
Language, Power Management, Gesture Setting,
System Info.(About) and Advanced Setting are
categories of Setting. Touch Screen Calibration,
G-Sensor Calibration, Firmware Upgrade and Restore
Defaults setting are categories in the Advanced
settings.
1. Select Settings from Home Screen.
2. Use 5 way control to navigate and configure the
setting items.
3. Press Back key to return to the previous window.