Navn;Beskrivelse;Kodeverdi;Navn engelsk;Beskrivelse engelsk;Kodeverdi engelsk Unknown;;Unknown;;" The correct value for the specific spatial object is not known to, and not computable by, the data provider. However, a correct value may exist. -- Description -- EXAMPLE When the ""elevation of the water body above the sea level"" of a certain lake has not been measured, then the reason for a void value of this property would be 'Unknown'. NOTE 'Unknown' is applied on an object-by-object basis in a spatial data set. "; Unpopulated;;Unpopulated;; The characteristic is not part of the dataset maintained by the data provider. However, the characteristic may exist in the real world. -- Description -- EXAMPLE When the “elevation of the water body above the sea level” has not been included in a dataset containing lake spatial objects, then the reason for a void value of this property would be ‘Unpopulated’. NOTE The characteristic receives this value for all objects in the spatial data set. ; Withheld;;Withheld;; The characteristic may exist, but is confidential and not divulged by the data provider.;