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Identifies group of links, which start and end at the same two nodes. These might give problems in some networking algorithms ("emme/2" for instance).
RW Net has no problem with parallel links, unless you want to apply a turn restrictions from one parallel link to another and only want it at one of the 2 nodes they have in common.
The function returns the number of parallel links found.
The generated GIS file contains fields for:
Syntax: ParallelLinks(filename: string; GF: TGISformat): integer
In Standard version you are limited to networks with <10000 links.