1. First Shade

Open the menu.
Move the Common shade slider.
The "Shade" checkbox will toggle on automatically.

2. Eye Care

The instant shade off (aka toggle off) will irritate the eye. Because of this, the Eye Care feature was implemented - it replaces the instant toggle with a gentle fade.

3. Driving the shade via mouse

Driving the shade via mouse is an easy and natural way. Open the menu and move the Common shade slider until you get the best view.
Change the selection of the "Shade" checkbox to toggle the shade off and on.
The shade level (the value of the common shade slider) is preserved.
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