Garmin GPS IIplus Owner's Manual page 55

Activating and Inverting Routes
After a route has been entered, it can be either activated in sequence or inverted
from the route definition page. The process of activating or inverting a stored route
takes a storage route (routes 1-19) and copies it into the active route (route 0) for
navigation. The storage route is now no longer needed and will be retained in its
original format under its existing route number.
This system allows you to have an active route that you may edit during naviga-
tion and save as an entirely new route from the original. You will have to copy the
active route to an unused storage route to save it, since new route or TracBack activa-
tion overwrites route 0.
To activate a route:
1. From the route definition page, highlight the 'route number' field.
2. Enter the route number to be activated, and press ENTER.
3. Highlight 'ACT?' (Fig. 49a), and press ENTER.
To activate a route in inverted order:
1. Follow the steps above, but select 'INV?' (Fig. 49b), and press ENTER.
Reference
Fig. 49a
Fig. 49b
49