Garmin GPS II Owner's Manual page 64

REFERENCE
Fig. 58
58
Using the Highway Page
The GPS II's highway page (Fig. 58) also provides graphic steering guidance to a
destination, with a greater emphasis on the straight-line desired course and the dis-
tance and direction you are off course. As you head toward your destination, the
middle of the screen provides visual guidance to your waypoint on a moving graph-
ic 'highway'.
Your present position is represented by the diamond in the center of the course
deviation scale. The line down the middle of the highway represents your desired
track. As you navigate toward a waypoint, the highway will actually move, indicat-
ing the direction you're off course, relative to the position diamond on the CDI
scale. To stay on course, simply move toward the center of the highway.
If you do get off the desired course by more than 1/5th of the selected CDI
range, the exact distance you are off course will be displayed where the CDI scale
setting normally appears. If you get too far off course (the highway has disap-
peared), a message box will appear to indicate what course to steer to get back on
course. For information on how to set this scale, see page 76.