--- /dev/null
+<?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>