<langKnowledge>

<langKnowledge> (language knowledge) 包含個人的語言認知狀態，可用敘述的方式或元素langKnown的條列形式來表達。
組件 namesdates — 13 Names, Dates, People, and Places
除全域屬性以外 att.datable (att.datable.w3c (@period, @when, @notBefore, @notAfter, @from, @to)) (att.datable.iso (@when-iso, @notBefore-iso, @notAfter-iso, @from-iso, @to-iso)) att.editLike (@cert, @resp, @evidence, @source) (att.dimensions (@unit, @quantity, @extent, @precision, @scope) (att.ranging (@atLeast, @atMost, @min, @max)) )
tags 提供一個或多個有效的所指語言標籤
狀態 非必備的
資料類型 1–∞ 次可出現:  

<rng:ref name="data.language"/>
data.language
以空白鍵隔開
屬於
model.persTraitLike
可包含
core: p
linking: ab
namesdates: langKnown
宣告 

<rng:element name="langKnowledge">
 <rng:ref name="att.global.attributes"/>
 <rng:ref name="att.datable.w3c.attributes"/>
 <rng:ref name="att.datable.iso.attributes"/>
 <rng:ref name="att.editLike.attributes"/>
 <rng:ref name="att.dimensions.attributes"/>
 <rng:ref name="att.ranging.attributes"/>
 <rng:optional>
  <rng:attribute name="tags">
   <rng:list>
    <rng:oneOrMore>
     <rng:ref name="data.language"/>
    </rng:oneOrMore>
   </rng:list>
  </rng:attribute>
 </rng:optional>
 <rng:choice>
  <rng:ref name="model.pLike"/>
  <rng:oneOrMore>
   <rng:ref name="langKnown"/>
  </rng:oneOrMore>
 </rng:choice>
</rng:element>
element langKnowledge
{
   att.global.attributes,
   att.datable.w3c.attributes,
   att.datable.iso.attributes,
   att.editLike.attributes,
   att.dimensions.attributes,
   att.ranging.attributes,
   attribute tags { list { data.language+ } }?,
   ( model.pLike | langKnown+ )
}
例子
<langKnowledge tags="en-GB fr">
 <p>英式英文與法文</p>
</langKnowledge>
例子
<langKnowledge>
 <langKnown tag="en-GB" level="H">英式英文</langKnown>
 <langKnown tag="fr" level="M">法文</langKnown>
</langKnowledge>