<vAlt>

<vAlt> (value alternation) represents the value part of a feature-value specification which contains a set of values, only one of which can be valid. 18.8.1 Alternation
組件iso-fs — 18 Feature Structures
屬性
屬於 model.featureVal.single
可包含
iso-fs: binary default fs numeric string symbol vAlt vColl vLabel vMerge vNot
宣告
element vAlt
{
   att.global.attributes,
   ( ( model.featureVal ), model.featureVal+ )
}
例子
<f name="gender">
 <vAlt>
  <symbol value="masculine"/>
  <symbol value="neuter"/>
  <symbol value="feminine"/>
 </vAlt>
</f>