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A commonly understood Term for the directional perspective of the ISO-COORDINATE-REFERENCE-SYSTEM. That is, it indicates whether the System portrays components of geospatial features on a surface defined by a datum (the value of the name is horizontal) , describes the feature's components' distances from and normal to a plane tangent to the surface of the earth at the location of a datum (the value of the name is vertical), or describes both the feature's placement on a surface as well as the feature's Component distances from the surface of the earth (the value of the name is compound). |