Agreed, I'll pass it on. Although technically it's accurate because the spline is divided internally using those inputs. Each section only knows about its own start and end. This is kind of explained in the description "Length of the current section on X Spline, substracting size of Start and End segments. A section is the path between two Start, End, Corner, Evenly or Marker segments" But since start and end already having a meaning in the RailClone world it's a bit confusing.