Ram Trucks MEDIA CENTER 730N for Jeep - Manual (Page 152)

The tip of the arrow in the circle in the center shows your
vehicle’s position on the map. The square soft-keys on
the left show the map zoom factor, the map orientation,
the display mode, and the current location soft-key.
Map Zoom Level
Press the Zoom soft-key to change the zoom level.
Touch the slider or the IN and OUT soft-keys to change
the zoom level. Roads with lower functional classification
are not shown in higher zoom levels. (E.g. residential
streets, lightly-traveled county roads.)
NAVIGATION 141