How the elevations of the line follow the surface?

How can I make a straight line break where the surface breaks by following the surface?
Screen shot is from Civil3D;
Looking from above, the green circles above the red line indicate where the line breaks along the surface.
When you look from perspective, you can see that the line follows the surface.
What you see in 3D is actually a straight line from above.
How can I do this with Openroads designer 2020?