{
   description = "Identifier for a Coordinate Reference System",
   fields = [
      {"crsID", {
         description = "Numerical identifier of this CRS within the registry"
      }},
      {"h", {
         description = "True for \"h\" version of the CRS (for, CRS84h)"
      }},
      {"registry", {
         description = "Authoritative registry in which this CRS is defined"
      }}
   ]
}
