<vAlt>

<vAlt> (값 교체) 자질-값 명세의 값 부분으로 값은 집합이다. 그 중 단 하나만 유효한 값이다. [18.8.1 Alternation]
모듈 iso-fs — Feature Structures
속성 att.global (@xml:id, @n, @xml:lang, @xml:base, @xml:space) (att.global.rendition (@rend, @style, @rendition)) (att.global.linking (@corresp, @synch, @sameAs, @copyOf, @next, @prev, @exclude, @select)) (att.global.analytic (@ana)) (att.global.facs (@facs)) (att.global.change (@change)) (att.global.responsibility (@cert, @resp)) (att.global.source (@source))
클럽 회원
model.featureVal.single
에 의해 포함된
iso-fs: f fvLib if vAlt vColl vDefault vLabel vMerge vNot vRange
포함할 수 있다
iso-fs: binary default fs numeric string symbol vAlt vColl vLabel vMerge vNot
예
<f name="gender">
 <vAlt>
  <symbol value="masculine"/>
  <symbol value="neuter"/>
  <symbol value="feminine"/>
 </vAlt>
</f>
Content model 
<content>
 <sequence>
  <classRef key="model.featureVal"/>
  <classRef key="model.featureVal"
   minOccurs="1" maxOccurs="unbounded"/>
 </sequence>
</content>
선언 
<rng:element name="vAlt">
 <rng:ref name="att.global.attributes"/>
 <rng:ref name="att.global.rendition.attributes"/>
 <rng:ref name="att.global.linking.attributes"/>
 <rng:ref name="att.global.analytic.attributes"/>
 <rng:ref name="att.global.facs.attributes"/>
 <rng:ref name="att.global.change.attributes"/>
 <rng:ref name="att.global.responsibility.attributes"/>
 <rng:ref name="att.global.source.attributes"/>
 <rng:group>
  <rng:ref name="model.featureVal"/>
  <rng:oneOrMore>
   <rng:ref name="model.featureVal"/>
  </rng:oneOrMore>
 </rng:group>
</rng:element>
element vAlt
{
   att.global.attributes,
   att.global.rendition.attributes,
   att.global.linking.attributes,
   att.global.analytic.attributes,
   att.global.facs.attributes,
   att.global.change.attributes,
   att.global.responsibility.attributes,
   att.global.source.attributes,
   ( model.featureVal, model.featureVal+ )
}