A Diggs geometry object that represents a surface that lies within asingle plain. It's properties are of a polygon with an outer ring and optionallymultiple inner rings The coordinate points that define all of the rings must becoplanar
Database handle for the object. It is of XML type ID, so is constrained to beunique in the XML document within which it occurs. An external identifier for the object inthe form of a URI may be constructed using standard XML and XPointer methods. This is doneby concatenating the URI for the document, a fragment separator, and the value of the idattribute.
<element name="PlanarSurface" substitutionGroup="diggs:AbstractSurface" type="diggs:PolygonType"><annotation><documentation>A Diggs geometry object that represents a surface that lies within a single plain. It's properties are of a polygon with an outer ring and optionally multiple inner rings The coordinate points that define all of the rings must be coplanar</documentation></annotation></element>