Local planar, local, or other projection or grid description in Geospatial Reference Data (Horizontal coordinate system) (Grid coordinate system)
Complete description for an undefined grid system used for the data set. The information provided includes the name of the grid system, the names of the parameters and values used for the data set, and the citation of the specification for the algorithms that describe the mathematical relationship between the Earth and the coordinates of the grid system. Horizontal coordinate system. Grid coordinate system.