Garmin NavTalk Owner's Manual page 21

The GPS/PHONE Key switches between the Cellular Phone and GPS
Receiver operation. When held for one second it can turn off the
GPS receiver as a battery-saver feature.
The ALPHANUMERIC Keys enter numbers for manual dialing and
are used for Speed Dialing when held for more than one second.
They are also used for data entry. The 9 key is also used for Emer-
gency dialing when held for more than 1 second..
The * Mark Key marks waypoints in the GPS mode and enters a
(star) in the cellular mode.
The # GOTO Key displays the GOTO waypoint page in GPS mode,
allowing you to select the destination waypoint. Press and hold this
key to activate the MOB (Man Overboard) feature. It also enters
(pound) in the cellular mode.
The ZOOM/VOLUME (in/out - up/down) Keys in the GPS
mode allow you to zoom in and out on the Map page and
adjust the scale on the Highway page. In the cellular mode
they adjust volume up or down for the phone ringer, beeper,
and speaker. These keys pop-to-top, the volume adjustment
window whenever pressed with the exception of the map and
highway pages.
The ARROW Rocker Pad controls the movement of the cur-
sor. It is used to select options and positions. It is used to
enter both alpha characters and numeric data.
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