Garmin eTrex Owner's Manual page 30

Reference
Track Logs
You need to save the
track log fi rst before you
can use the TracBack
feature.
'CLEAR' the track log
before starting a new
trip.
28
What is a Track Log?
The eTrex draws an electronic breadcrumb trail or
'track log' on the Map Page as you travel. The track log
starts recording as soon as the eTrex gets a location fi x. If
you want to keep a record of a certain track log before the
track memory is fi lled and it begins to overwrite the earli-
est tracks, you can save it to the 'Saved Tracks' list. You
can save a total of ten tracks in the eTrex. Saved tracks
can be used for navigation later. After a track log is saved,
the saved track will have a beginning (BEGIN) and ending
(END) point. This simply shows the "when/where" of the
starting and ending points of the saved track.
When you are ready to return to where you started,
the eTrex will take you back by following the track log
that you left behind. 'TracBack' allows you to return along
a traveled path without marking any waypoints. If you
want to keep a record of a certain track log or use the
'TracBack' feature, it is recommended that you clear the
track log before you start traveling. The percentage of
memory used by the current track log is displayed at
the top of the page. After the track log is 'CLEARED', it
will show zero percent. When the display shows 99%,
the most recent track points will start overwriting the
least recent track points. Thus, in order to avoid losing
any track points, you should save the track log before it
reaches 99% of memory usage.
Clearing the current track log:
1. With the 'MENU' Page displayed, press the UP and
DOWN Buttons to highlight 'TRACKS' and press
ENTER. The 'TRACK LOG' Page will appear.
2. Highlight the 'CLEAR' Button and press ENTER.
3. You will be asked 'DO YOU REALLY WANT TO
CLEAR THE TRACK LOG?'. Use the DOWN Button to
highlight 'YES' and press ENTER to clear the current
track log.