P5: Guidelines for Electronic Text Encoding and Interchange

<rng:element name="m">
 <rng:ref name="att.global.attributes"/>
 <rng:ref name="att.segLike.attributes"/>
 <rng:ref name="att.metrical.attributes"/>
 <rng:optional>
  <rng:attribute name="baseForm">
   <rng:ref name="data.word"/>
  </rng:attribute>
 </rng:optional>
 <rng:zeroOrMore>
  <rng:choice>
   <rng:text/>
   <rng:ref name="model.gLike"/>
   <rng:ref name="model.segLike"/>
   <rng:ref name="model.global"/>
  </rng:choice>
 </rng:zeroOrMore>
</rng:element>

element m
{
   att.global.attributes,
   att.segLike.attributes,
   att.metrical.attributes,
   attribute baseForm { data.word }?,
   ( text | model.gLike | model.segLike | model.global )*
}