<?xml version='1.0'?> <grammar xmlns="http://relaxng.org/ns/structure/1.0" datatypeLibrary="http://www.w3.org/2001/XMLSchema-datatypes" ns="http://www.iana.org/assignments"> <include href="iana-registry.rng"/> <start> <element name="registry"> <ref name="registryMeta"/> <element name="registry"> <ref name="registryMeta"/> <zeroOrMore> <element name="record"> <optional> <attribute name="date"><ref name="genericDate"/></attribute> </optional> <optional> <attribute name="updated"><ref name="genericDate"/></attribute> </optional> <element name="value"><ref name="genericRange"/></element> <element name="description"><text/></element> <ref name="references"/> </element> </zeroOrMore> </element> <ref name="people"/> </element> </start> </grammar>