Humanware Prodigi User Manual page 14

 Press the Zoom Up button to zoom in and the Zoom Down
button to zoom out. You can also press and hold the Zoom
Up-Down buttons to progressively adjust the zoom level, and
release once you reach your desired zoom level.
 To toggle between color, positive, and negative contrasts,
press the Settings button to access the Settings menu, scroll
down by panning upward on the touchpad to select Contrast,
and press the Zoom Up-Down buttons or click on the
touchpad to toggle between the different values. Press
Settings again to exit the Settings menu and return to your
document.
 By default, Prodigi will read aloud the Settings' menus, items,
and values. To deactivate Speech, access the Settings, select
Speech and set it to Off. Exit the Settings to return to your
document.
 While zoomed in, you can adjust the brightness of your
document by accessing the Settings menu. Use the Zoom Up-
Down buttons or click on the touchpad to adjust the brightness
of your document in percentage. Once you reach your desired
brightness level, exit the Settings or simply wait a few seconds
to continue magnifying.
 Press Back to see the locator again. This is a practical way to
locate your position on the page.
 Press Back again to reposition the locator at the bottom center
of the screen.
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