Garmin GNC 300 Pilot's Manual page 71

The GNC 300 lets you create up to 20 routes (numbered 0 through 19), with up
to 31 waypoints each. Routes are created, copied and edited through the R key,
which features five route pages selectable using the GNC 300' s outer knob. The
approach select, SID select and STAR select pages, used for approach navigation, are
discussed in Section 6.
Route Catalog Page
SID Select Page
The five route pages can be divided into two types: active route pages and a
route catalog page. Active route pages provide information and editing functions for
Route 0, which serves as the route you are currently navigating. The route catalog
page serves as the main page for creating, editing, activating, deleting and copying all
routes. Routes 1-19 are storage routes, which are stored in the GNC 300' s internal
memory. Once a storage route is 'activated', it is placed into Route 0 for navigation
until it is cancelled, overwritten by activating another route or erased when the GPS
receiver is turned off. If you want to save a route currently in Route 0, be sure to copy
it to an open storage route (routes 1-19) before it is cancelled, overwritten or erased.
Active Route Page
Approach Select Page
STAR Select Page
APPENDIX A
SECTION
ROUTES
5
Route Leg Settings
Overview
61