Garmin GPS II Owner's Manual page 50

REFERENCE
44
Tips on Creating and Using the TracBack Feature
To get the most out of the TracBack feature, remember the following tips:
• Always clear your track log at the exact point that you want to go back to (trail head,
truck, dock, etc.).
• The 'record' option on the track log setup page must be set to the 'YES' position.
• There must be at least two track log points stored in memory to create a TracBack
route.
• If there are not enough available waypoints in memory to create a TracBack route,
you will be alerted with a 'waypoint memory full' message, and the receiver will use
any available waypoints to create a TracBack route with an emphasis on the track log
closest to the destination (the oldest track log point in memory).
• If the 'method' option on the track log setup page is set to a time interval, the
TracBack route may not follow your exact path. (Keeping the criteria set to automatic
will always provide the most detailed TracBack route.)