I agree that's a problem with the glider image, but that's the issue I had with railroads as well—there's much more freedom than what is shown here; railroads c

I agree that's a problem with the glider image, but that's the issue I had with railroads as well—there's much more freedom than what is shown here; railroads can go multiple ways, join in various orders etc. What I mean is one line change in a given direction does not imply subsequent ones will be in the same.