<?xml version="1.0" encoding="UTF-8"?>
<grammar xmlns="http://relaxng.org/ns/structure/1.0">
  <include href="its20.rng"/>
  <start>
    <group>
      <optional>
        <ref name="its-local.attributes"/>
      </optional>
      <optional>
        <ref name="its-attribute.version"/>
      </optional>
    </group>
  </start>
</grammar>
