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4. Control elements
When sliding the display sideways three control buttons will appear.
4.1 Changing color mode
By pushing the top button you may change the color selection options on the
TFT-screen:
• Full color
• Positive mode: black on white
• Negative mode: white on black,
green on black, yellow on black, yellow on blue
4.2 Yellow magnification button
By pressing the middle button you can switch the magnification between x3, x5
and x7 (with writing stand: approx. x2, x3 and x4).
4.3 Freeze frame
By pressing the lower button, the original image will be pictured as a fixed image
on the TFT-screen. Now you can easily view details which lie within your reach
and outside your range of vision. When pressing the button again the current template will
be redisplayed.