Garmin NavTalk Owner's Manual page 92

SECTION 6
6.10.4 TracBack
TracBack allows you to retrace your path without
the need to manually store waypoints along the way.
The NavTalk can be set to automatically record track log
points any time the receiver is on and locked onto satel-
lites (see page 91).
TracBack routes are created by reducing your track
log into a route of up to 30 waypoints and activating
the new route in reverse order along those waypoints.
Once activated, a TracBack route will lead you back
to the oldest track log point stored in memory, so it' s a
good idea to clear the active track log at the beginning
of your current trip (e.g., at the dock or trailhead),
before you get started.
To clear the active track log and define a start-
ing point for a TracBack:
To create and start a TracBack route:
Once a TracBack has been started, the NavTalk will
take one of the track logs currently stored in memory
and divide it into route segments, called 'legs'. Up to 30
track log waypoints (labeled 'T###', e.g. 'T001') will be
created to mark the most significant features of the track
log in order to duplicate your path as closely as possible.