P5: Guidelines for Electronic Text Encoding and Interchange

<rng:element name="revisionDesc">
 <rng:ref name="att.global.attributes"/>
 <rng:choice>
  <rng:ref name="list"/>
  <rng:oneOrMore>
   <rng:ref name="change"/>
  </rng:oneOrMore>
 </rng:choice>
</rng:element>

element revisionDesc { att.global.attributes, ( list | change+ ) }