Metadata -- data about the content, quality, condition, and other characteristics of data.

          Type: compound

          Short Name: metadata

Metadata =
          Identification_Information +

          0{Data_Quality_Information}1 +

          0{Spatial_Data_Organization_Information}1 +

          0{Spatial_Reference_Information}1 +

          0{Entity_and_Attribute_Information}1 +

          0{Distribution_Information}n +

          Metadata_Reference_Information

(Sections 1 through 7 define the terms on the right side of the production rule.)