<?xml version="1.0" encoding="UTF-8"?>
<grammar xmlns="http://relaxng.org/ns/structure/1.0">

  <include href="its.rng"/>

  <start>
    <choice>
      <ref name="its-rules"/>
      <ref name="its-span"/>
      <ref name="its-ruby"/>
    </choice>    
  </start>

</grammar>
