<?xml version="1.0" encoding="UTF-8"?>
<element name="comment_history" xmlns="http://relaxng.org/ns/structure/1.0">
  <attribute name="comment">
    <data type="string"/>
  </attribute>
  <oneOrMore>
    <element name="comment">
      <attribute name="who">
        <data type="string"/>
      </attribute>
      <attribute name="when">
        <data type="string"/>
      </attribute>
      <attribute name="id">
        <data type="string"/>
      </attribute>
      <text/>
    </element>
  </oneOrMore>
</element>
