old_contents: """ This is a database of CRS IDs. """
  
  from collections import namedtuple
  
  CRS = namedtuple("CRS", ["shortname", "type", "urn"])
  
  # List of the available coordinate systems
  LONLAT_WGS84 = CRS("WGS84", "geographical", "urn:ogc:def:crs:EPSG::4326")
  CARTESIAN = CRS("cartesian", "local", "urn:ogc:def:crs:EPSG::5806")
  
  
  
  # Convenience aliases
  LONLAT = LONLAT_WGS84       # Convenience
  
new_contents: """ This is a database of CRS IDs. """
  
  from collections import namedtuple
  
  CRS = namedtuple("CRS", ["name", "type", "urn"])
  
  # List of the available coordinate systems
  CARTESIAN = CRS("cartesian", "local", "urn:ogc:def:crs:EPSG::5806")
  LONLAT_WGS84 = CRS("lonlat", "geographical", "urn:ogc:def:crs:EPSG::4326")
  UPSNORTH_WGS84 = CRS("UPS North", "projected", "urn:ogc:def:crs:EPSG::32661")
  UPSSOUTH_WGS84 = CRS("UPS South", "projected", "urn:ogc:def:crs:EPSG::32761")
  NSIDCNORTH = CRS("NSIDC Sea Ice Sterographic North", "projected", "urn:ogc:def:crs:EPSG::3411")
  NSIDCSOUTH = CRS("NSIDC Sea Ice Sterographic South", "projected", "urn:ogc:def:crs:EPSG::3412")
  
  
  
  # Convenience aliases
  LONLAT = LONLAT_WGS84       # Convenience
  
subject: add a couple more crs