You can insert a high or low level point onto a feature line, survey figure, plot line, or 3D polyline.
This command inserts the break point where two gradients intersect. Specify the gradient or slope ahead from the start point and back from the end point.
After you select the start and end points, an arrow is displayed at the start of the span. The command line displays the start and end levels and the distance between the start and end points.
Enter a positive value to gradient up or a negative value to gradient down.