72 Magellan MAP 410 GPS ReceiverCCartography 17legend 17interstate highway 17large city 17major city 17medium city 17railroad tracks 17small city 17state border 17Citieslarge 17major 17medium 17scales 20small 17Clear Memory 50Compass Screen 15customizing 16Contrast 42Coordinate Systems 47, 55secondary 13Course Over Ground (COG) 14, 15, 16, 22, 68Course Projection 19Cross Track Error (XTE) 14, 16, 70Customizing 46beeper 50clear memory 50coordinate system 47disabling the NAV screens 46elevation mode 48Initializing 46light timer 49map datum 47NAV units 48north reference 49personalize 50setting baud rate 51Setup 46time format 48DData Window 22