Language Resource Management -- Morpho-syntactic Annotation Framework (MAF)

<rng:element name="maf">
<rng:optional>
 <rng:ref name="tagset"/>
</rng:optional>
<rng:optional>
 <rng:ref name="maf.metadata"/>
</rng:optional>
<rng:oneOrMore>
 <rng:choice>
  <rng:ref name="token"/>
  <rng:ref name="wordForm"/>
  <rng:ref name="wfAlt"/>
  <rng:ref name="fsm"/>
 </rng:choice>
</rng:oneOrMore>
</rng:element>

element maf { tagset?, maf.metadata?, ( token | wordForm | wfAlt | fsm )+ }