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check mark next to the prefix means that prefix is in use. Select the prefix
that you wish to change by highlighting it, then change it by pressing the
ENT key. Press the EXIT key when you're finished with this menu.
Reset Options
To reset all features to their fac-
tory defaults, select "Reset Op-
tions" from the "System Setup"
menu. After selecting, a new
menu appears, asking if you want
to reset all options. Use the ar-
row keys to highlight the answer,
and the ENT key to select it. The
unit clears all menus and returns
all settings to the factory defaults.
Note: Reset Options does not
erase any waypoints, routes, or plot trails.
Popup Help
Help is available for virtually all of the menu labels on this unit. By high-
lighting a menu item and leaving it highlighted for a few seconds, a "popup"
message appears that describes the function of the the menu item.
This feature is on by default. To turn it off, highlight "Popup Help" from the
System Setup menu, then press the ENT key. To turn it on again, repeat
the above steps.
Software Information
To view the version number of the operating system, select "Software
Information" from the System Setup menu. A screen appears with the
system information. Press the EXIT key to erase this screen.
SUN/MOON CALCULATOR
This unit has a sunrise/sunset
and moonrise/moonset calculator
that shows this information any-
where and anytime in the world.
To use it, press the MENU key
twice , then select "Sun/Moon
Calculator". The screen shown at
right appears. The calculations for
both are done at the same time.
The sun and moon data for
today's date appear above their
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