P5: Guidelines for Electronic Text Encoding and Interchange

<rng:element name="biblScope">
 <rng:ref name="att.global.attributes"/>
 <rng:optional>
  <rng:attribute name="type">
   <rng:choice>
    <rng:value>vol</rng:value>
    <rng:value>issue</rng:value>
    <rng:value>pp</rng:value>
    <rng:value>chap</rng:value>
    <rng:value>part</rng:value>
    <rng:data type="Name"/>
   </rng:choice>
  </rng:attribute>
 </rng:optional>
 <rng:ref name="macro.phraseSeq"/>
</rng:element>

element biblScope
{
   att.global.attributes,
   attribute type { "vol" | "issue" | "pp" | "chap" | "part" | xsd:Name }?,
   macro.phraseSeq
}