| Class | Description | 
|---|---|
| CoordinateSystem |  
          
           The value of the GCS or DCS entry of a geospatial measure dictionary. 
            |  
       
| GeographicCoordinateSystem |  
          
           A geographic coordinate system (GEOGCS) specifies an ellipsoidal object in geographic coordinates: angular units of latitude and longitude. 
            |  
       
| Measure |  
          
           Parent class for the Measure dictionaries. 
            |  
       
| MeasureGeospatial |  
          
           Geospatial Measure dictionary. 
            |  
       
| MeasureRectilinear |  
          
           Rectilinear Measure dictionary. 
            |  
       
| PointData |  
          
           A Point Data dictionary. 
            |  
       
| ProjectedCoordinateSystem |  
          
           A projected coordinate system (PROJCS), which includes an embedded GEOGCS, specifies the algorithms and associated parameters used to transform points between geographic coordinates and a two-dimensional (projected) coordinate system. 
            |  
       
| Viewport |  
          
           A ViewPort dictionary. 
            |  
       
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