Display Modes; Zooming - Rehan Looky 4 Mode D'emploi

12. Display modes

By swiping from the top to the bottom of the screen, or vice versa
you can cycle through multiple colour modes.

13. Zooming

To alter the magnification you slide your finger up/down on the
left or right hand side of the touch screen.
To zoom in slide your finger upwards on the zooming icon, to zoom
out, slide downwards on the zooming icon. The magnification
range of the Looky4 ranges from 2x to a 20x magnification.
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or
Zooming
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Looky4