Magellan Trailblazer, Справочное руководство

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"CAMP." As you walk to your skiff at the dock, the receiver continues to
obtain position fixes; these are "updates" to the first fix obtained. Once at
the dock, you save the current position fix as waypoint "DOCK." Instead of
travelling directly across the lake to the inlet on the other side, you make a
detour to the buoy to avoid an area you know is too shallow for your craft.
Save the position fix at the buoy as waypoint "BUOY." You now continue to
the inlet, where you tie up your skiff and save another position fix as waypoint
"INLET."
The position fixes that are saved as waypoints (CAMP, DOCK, BUOY, and
INLET) can be used as electronic markers to record where you've been. These
waypoints can also be used to guide you back to your camp.
Navigating Home With Waypoints
When it's time to return to your camp, you decide to establish your course
and navigate with the GPS receiver. Becoming familiar with the receiver now
may help you on a later trip if weather conditions (cloud cover, rain, etc.)
should make using your own navigation skills difficult, or if you need
navigation assistance in an emergency.
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