Eschenbach Optik TVi Color - Manual (Page 4)

Rev D EN 3
several small increments; repeatedly pressing this button
will cycle through these levels. If the button is pressed
for longer than half a second, it will automatically step up
and down through the different brightness levels until
released.
Scroll-Zoom Control
Rotate the scroll-zoom wheel forwards and backwards to
select the level of magnification you are comfortable
with. Sliding the scroll wheel forwards increases the
magnification, while rotating backwards will decrease the
magnification. Rotate the scroll wheel fully backwards
and the mechanism will click into an overview mode,
which moves the focusing area beyond the base of the
mouse. This mode is needed when using the
handwriting stand.
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