A surface that lies within a single plane, as a polygon with an outer ring andoptionally several inner rings. The coordinate points of all rings are coplanar.
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:PlanarSurfaceType"><annotation><documentation>A surface that lies within a single plane, as a polygon with an outer ring and optionally several inner rings. The coordinate points of all rings are coplanar.</documentation></annotation></element>