User's Manual
Page 16
Move the locator by panning to quickly reach a section of the
object or document you want to magnify:
Press the Zoom Up button or click on the touchpad to
enlarge the section delimited by the locator at your preferred
zoom level:
You can navigate, zoom, adjust the brightness and change
contrasts in the same way as when reading a document (see
section Spot Reading above).
Press Back to see the locator again.
Press Back again to reposition the locator at the bottom
center of the screen.