<element name="stopLines" type="gml:LineStringSegmentArrayPropertyType" minOccurs="0" maxOccurs="unbounded">
	<annotation>
		<documentation>Stoplines are lines where the local
  continuity or regularity of the surface is questionable.
  In the area of these pathologies, triangles intersecting
  a stopline shall be removed from the tin surface, leaving
  holes in the surface. If coincidence occurs on surface
  boundary triangles, the result shall be a change of the 
  surface boundary. Stoplines contains all these
  pathological segments as a set of line strings.</documentation>
	</annotation>
</element>