P5: Guidelines for Electronic Text Encoding and Interchange

<rng:element name="textDesc">
 <rng:ref name="att.global.attributes"/>
 <rng:ref name="att.declarable.attributes"/>
 <rng:group>
  <rng:ref name="model.textDescPart_sequence"/>
  <rng:oneOrMore>
   <rng:ref name="purpose"/>
  </rng:oneOrMore>
 </rng:group>
</rng:element>

element textDesc
{
   att.global.attributes,
   att.declarable.attributes,
   ( model.textDescPart_sequence, purpose+ )
}