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A region is a geometry object containing a non-self-intersecting list of points that closes on itself. Regions are typically used to define the plan view boundaries of an SVOFFICE model. Each region in a 3D SVOFFICE model will contain exactly one polygon; it is worth noting that a region does not contain Z coordinates, so polygons must be converted to regions before they can be used for these purposes.


Regions are always closed, and thus do not require a duplicate closing point at the end of the list. The closing point will be automatically removed if present.