[mkgmap-dev] How to evaluate network=e-road if it's in a relation

The following command highway=* & network=e-road works fine, if the tag network=e-road is directly attached to the road. But in most cases it is attached via a relation, and in these cases it is not evaluated. In my relations file there are only rules for type=boundary | type=multipolygon type=route & (route=bus | route=trolleybus | route=ferry | route=subway | route=train | route=tram) type=route & (route=ski) I am not very familier with the relations commands. Is there a way to refer to network=e-road via the relations file? Walter