The last screen is the route screen and can be used to build routes. You can have as many routes as you have palm memory for and each route can have up to 32 waypoints in it and are reversible. Routes can have a name up to 20 characters long although you will need to edit the route to see the full name. Both routes and waypoints can be beamed to another palm which is a nice feature to exchange information. I found that it is best to have both units in GPS companion when beaming waypoints and routes since I had problems if the receiver was not running nav companion.
Routes are editable on the route page which takes a long time to appear if the route is long.
A route is built by renaming the waypoint entries that are displayed. While the route edit is starting your screen is blank and when exiting your screen is locked up for a period. The main purpose of the Nav companion is navigation. This is done by having waypoints stored in the unit that can serve as destinations. A waypoint might mark your campsite and when you need to return to it you can use the gps and the nav companion program to guide you back to the campsite.