Hi Maxime! There are some excel templates with a schema tab that gives you some information about specific JSON fields. Attached is the zoning types example. Let me see what else I can find for you and specifically what I can find about the EdgeInfos field. As a start, the EdgeInfos JSON string contains information that tells Urban if the edge of the parcel is a front, rear, or side edge. The edge orientation is calculated based on road type - for example, a front-facing edge usually faces a local street.