This element is the PDS4 Radio_Occultation XML Schema. This element is the PDS4 Radio_Occultation_Support XML Schema. This element is the PDS4 Rings_Supplement XML Schema. This element is the PDS4 Stellar_Occultation XML Schema. This class is required for all radio ring occultations This class is required for all radio ring occultation calibration and geometry supplemental files. This class is required for all Rings Node currated data products This class is required for all stellar ring occultations This section contains the simpleTypes that provide more constraints than those at the base data type level. The simpleTypes defined here build on the base data types. This is another component of the common dictionary and therefore falls within the pds namespace.