The mechanism used to represent spatial information in the data set. Name of types of geographic features, addressing schemes, or other means through which locations are referenced in the data set. The system of objects used to represent space in the data set. The types and numbers of vector or nongridded point spatial objects in the data set. "Point and vector object information using the terminology and concepts from 'Spatial Data Concepts,' which is Chapter 2 of Part 1 in Department of Commerce, 1992, Spatial Data Transfer Standard (SDTS) (Federal Information Processing Standard 173): Washington, Department of Commerce, National Institute of Standards and Technology. (Note that this reference to the SDTS is used ONLY to provide a set of terminology for the point and vector objects. Name of point and vector spatial objects used to locate zero-, one-, and two-dimensional spatial locations in the data set. "The total number of the point or vector object type occurring in the data set. Point and vector object information using the terminology and concepts from Department of Defense, 1992, Vector Product Format (MIL-STD-600006): Philadelphia, Department of Defense, Defense Printing Service Detachment Office. (Note that this reference to the VPF is used ONLY to provide a set of terminology for the point and vector objects.) "The completeness of the topology carried by the data set. The levels of completeness are defined in Department of Defense, 1992, Vector Product Format (MIL-STD-600006): Philadelphia, Department of Defense, Defense Printing Service Detachment Office. Information about VPF point and vector objects. Name of point and vector spatial objects used to locate zero-, one- and two-dimensional spatial locations in the data set. The types and numbers of raster spatial objects in the data set. Raster spatial objects used to locate zero-, two-, or three-dimensional locations in the data set. The maximum number of raster objects along the ordinate (y) axis. For use with rectangular raster objects. The maximum number of raster objects along the abscissa (x) axis. For use with rectangular raster objects. "The maximum number of raster objects along the vertical (z) axis. For use with rectangular volumetric raster objects (voxels).