- you can show a current GPS data (Speed, Direction, Longitude, Latitude, Time, Date, Height); - you can open any of scanned maps (in a bmp or dib format); - you can calibrate the scanned maps yourself by two calibration points only (left-top and right-bottom); - calibrations are stored automatically for every map, you do not need to calibrate a map next time; - you can see your route line at the map;