Has anyone figured out .nodes files?

[Knittel]

These nodes are for the movement of an enemy following the player (I'm not sure, but this would make sense). It shows every Pathnode and the Pathnodes, where no Object is in between. The distance is also saved, I don't know why. Maybe to save performance.
For creating of a custom_story it is unimportant, you don't need to change them. The Mapviewer (and Game sometimes) creates it.