<element name="Edge" type="gml:EdgeType" substitutionGroup="gml:AbstractTopoPrimitive">
<annotation>
<documentation>gml:Edge represents the 1-dimensional primitive.
The topological boundary of an Edge (gml:directedNode) consists of a negatively directed start Node and a positively directed end Node.
The optional coboundary of an edge (gml:directedFace) is a circular sequence of directed faces which are incident on this edge in document order. In the 2D case, the orientation of the face on the left of the edge is "+"; the orientation of the face on the right on its right is "-".
If provided, the aggregationType attribute shall have the value "sequence".
An edge may optionally be realised by a 1-dimensional geometric primitive (gml:curveProperty).</documentation>
</annotation>
</element>
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