Touch Screen
1. Open "System Configure" and Double-Click "Mouse
& Touch Screen".

2. To enable touch screen
3. Select touch screen's model, may be "Microtouch" or "Elo".
4. Select Com port: ttyS0 is COM1 and ttyS1 is COM2.

5. Click "Calibration" button.
6. Touch the marker. There are three markers: top-left, bottom-left and
top-right.
