In the structural network, there are various line elements that are important for the network. At the same time, there is also a certain "gray area." These elements appear to belong to the network at first glance but, upon closer inspection, serve only for documentation purposes.

In contrast to the FeatureClass "StructureLine," only linear objects without geometry are managed in this table. Therefore, they are suitable for documenting the structural network topology for objects that should not be represented geographically on the map.