StringDirection
includes the following code list values (member concepts):
Scope Note:
OGC® Land and Infrastructure Conceptual Model Standard (LandInfra)
http://docs.opengeospatial.org/is/15-111r1/15-111r1.html
LandInfra 7.10.7 3) and Figure: 67: BoundingElement context diagram
Identifier:
http://www.cadastralvocabulary.org/CaLATheCodeList/StringDirection