P5: Guidelines for Electronic Text Encoding and Interchange

<rng:element name="msItem">
<rng:ref name="att.global.attributes"/>
<rng:ref name="att.msExcerpt.attributes"/>
<rng:optional>
 <rng:attribute name="class">
  <rng:ref name="data.code"/>
 </rng:attribute>
</rng:optional>
<rng:group>
 <rng:optional>
  <rng:ref name="locus"/>
 </rng:optional>
 <rng:choice>
  <rng:oneOrMore>
   <rng:ref name="model.pLike"/>
  </rng:oneOrMore>
  <rng:oneOrMore>
   <rng:choice>
    <rng:ref name="model.msItemPart"/>
    <rng:ref name="model.global"/>
   </rng:choice>
  </rng:oneOrMore>
 </rng:choice>
</rng:group>
</rng:element>

element msItem
{
   att.global.attributes,
   att.msExcerpt.attributes,
   attribute class { data.code }?,
   ( locus?, ( model.pLike+ | ( model.msItemPart | model.global )+ ) )
}