Multiple names may be provided. These will often be distinguished by being assigned by different authorities, as indicated by the value of the codeSpace attribute. In an instance document there will usually only be one name per authority. Label is a means of placing text relative to a specific geographic location. The appearance of the label is determined by the associated style. Image is a means of placing an image relative to a specific geometric location. The appearance of the image is determined by the associated style. PointOfInterest is a means of indicating a point of interest on an image or map or in a geographic dataset. No specific feature is attached to the point in question. The PointOfInterest can have an arrow (pointing at the POI) and a Label or Image. CurveOfInterest is a means of indicating a curve of interest on an image or map or in a geographic dataset. No specific feature is attached to the curve in question. The CurveOfInterest can have an arrow and a Label or Image. Region of interest is a means of hi-lighting a region on an image or map. The region is bounded by a polygon, may have an indicator arrow, and either Label or Image. Feature of interest is a means of hi-lighting a feature on an image or map. The feature is indicated by an arrow Label or Image.