Transfer of open polygons in PXML file

According to the PXML interface description, a Shape object with several points (Vertices) always forms a closed polygon (without the last point being positioned on the first point, as is the case in Unitechnik). An open polyline is therefore mapped in such a way so that the complete path is retraced.

Trails had previously transferred via separate shape objects for each section. This does not go against the interface description, but this method makes it difficult (if not impossible) to clearly distinguish between connected trails (for linear fixtures) and other fixtures (such as polygons or symbol fixtures).

From Version 2023 upwards, open route sections are therefore passed via the interface. This may have an impact on third-party systems, insofar as these do not take account of the interface definition (e.g. for a length calculation).