Datavideo KMU-200 Instruction Manual page 19

2. Tap the touch screen with three fingers such that only the Program Channel is shown
on the touch screen.
Note: You can also slide down with three fingers to show the Program Channel
only; slide down with three fingers to show all four channels.
3. In the KMU button group, press L or S button and the button should blink in red.
4. Tap the desired image point with one finger.
5. The channel image is now the image in the frame of the size (L or S) selected at Step
3.
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