P5: Linee guida per la codifica e l'interscambio del testo elettronico

<rng:element name="fileDesc">
<rng:ref name="att.global.attributes"/>
<rng:group>
 <rng:group>
  <rng:ref name="titleStmt"/>
  <rng:optional>
   <rng:ref name="editionStmt"/>
  </rng:optional>
  <rng:optional>
   <rng:ref name="extent"/>
  </rng:optional>
  <rng:ref name="publicationStmt"/>
  <rng:optional>
   <rng:ref name="seriesStmt"/>
  </rng:optional>
  <rng:optional>
   <rng:ref name="notesStmt"/>
  </rng:optional>
 </rng:group>
 <rng:oneOrMore>
  <rng:ref name="sourceDesc"/>
 </rng:oneOrMore>
</rng:group>
</rng:element>

element fileDesc
{
   att.global.attributes,
   (
      (
         titleStmt,
         editionStmt?,
         extent?,
         publicationStmt,
         seriesStmt?,
         notesStmt?
      ),
      sourceDesc+
   )
}