Locosys GT-31 Owner's Manual page 53

In addition to using saved waypoints or routes to navigate back where you came from, you may either
search the waypoint under Waypoint page, then select GO TO, or
execute the Reverse function to reverse the order of the waypoints in that route, then select GO TO to
navigate back the same route you came on:
For Example: If you started from a Gas Station (Waypoint 006), and came here following the Route
NAVIGPS01, now you want go back to Gas Station:
When Reverse function is activated, the waypoints will be listed in reversed order.
Highlight the reversed Route, and press in the TS to display the table
Select GO TO.
The system will navigate you back where you came from.
How To: Track Back to Where You Came from
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