Adjusted after checking, you can determine the grade line. So-called slope is slope gradient values, points (number) and elevations determined. Grades are usually triangular plate parallel to the push method, read cm grid drawn directly, request values to 1 per thousand. Grade change point locations read out directly on the map, generally on adjustments to a full 10-bit. Change the elevation is set according to the elevation of the route starting point by slope gradient and slope length calculation in turn.