<fsConstraints>

<fsConstraints> (자질-구조 제약) 유효 자질 구조 내용에 대한 제약을 명시한다. [18.11 Feature System Declaration]
모듈iso-fs — Feature Structures
속성att.global (@xml:id, @n, @xml:lang, @rend, @style, @rendition, @xml:base, @xml:space) (att.global.linking (@corresp, @synch, @sameAs, @copyOf, @next, @prev, @exclude, @select)) (att.global.analytic (@ana)) (att.global.facs (@facs)) (att.global.change (@change))
클럽 회원
에 의해 포함된
iso-fs: fsDecl
포함할 수 있다
iso-fs: bicond cond
선언

<rng:element name="fsConstraints">
 <rng:ref name="att.global.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:zeroOrMore>
  <rng:choice>
   <rng:ref name="cond"/>
   <rng:ref name="bicond"/>
  </rng:choice>
 </rng:zeroOrMore>
</rng:element>
element fsConstraints
{
   att.global.attributes,
   att.global.linking.attributes,
   att.global.analytic.attributes,
   att.global.facs.attributes,
   att.global.change.attributes,
   ( cond | bicond )*
}
예
<fsConstraints>
 <cond>
  <fs>
<!-- ...-->
  </fs>
  <then/>
  <fs>
<!-- ... -->
  </fs>
 </cond>
</fsConstraints>