<purpose>

<purpose> 描述該文本的一項目的或溝通功能 [15.2.1 The Text Description]
組件corpus — 15 Language Corpora
屬性att.global (@xml:id, @n, @xml:lang, @rend, @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))
type說明一項特定類型的目的。
狀態 非必備的
資料類型 

<rng:ref name="data.enumerated"/>
data.enumerated
被推薦的值包含:
persuade
教導、廣告、宣傳等
express
自我表達、自白等
inform
傳達訊息、教育等
entertain
消遣、娛樂等
degree說明該目的所佔的重要性程度。
狀態 非必備的
資料類型 

<rng:ref name="data.certainty"/>
data.certainty
屬於
可包含在於
corpus: textDesc
可包含
analysis: interp interpGrp span spanGrp
certainty: certainty precision respons
core: abbr address cb choice date distinct email emph expan foreign gap gb gloss hi index lb measure measureGrp mentioned milestone name note num pb ptr ref rs soCalled term time title
dictionaries: lang
figures: figure notatedMusic
header: idno
iso-fs: fLib fs fvLib
linking: alt altGrp anchor join joinGrp link linkGrp timeline
msdescription: catchwords depth dim dimensions height heraldry locus locusGrp material objectType origDate origPlace secFol signatures stamp watermark width
namesdates: addName affiliation bloc climate country district forename genName geo geogFeat geogName location nameLink offset orgName persName placeName population region roleName settlement state surname terrain trait
spoken: incident kinesic pause shift vocal writing
tagdocs: att code gi ident tag val
textcrit: witDetail
transcr: addSpan am damageSpan delSpan ex fw listTranspose metamark space subst substJoin
宣告

<rng:element name="purpose">
 <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:optional>
  <rng:attribute name="type">
   <rng:choice>
    <rng:value>persuade</rng:value>
    <rng:value>express</rng:value>
    <rng:value>inform</rng:value>
    <rng:value>entertain</rng:value>
    <rng:data type="Name"/>
   </rng:choice>
  </rng:attribute>
 </rng:optional>
 <rng:optional>
  <rng:attribute name="degree">
   <rng:ref name="data.certainty"/>
  </rng:attribute>
 </rng:optional>
 <rng:ref name="macro.phraseSeq.limited"/>
</rng:element>
element purpose
{
   att.global.attributes,
   att.global.linking.attributes,
   att.global.analytic.attributes,
   att.global.facs.attributes,
   att.global.change.attributes,
   attribute type
   {
      "persuade" | "express" | "inform" | "entertain" | xsd:Name
   }?,
   attribute degree { data.certainty }?,
   macro.phraseSeq.limited
}
例子
<purpose type="persuade" degree="high"/>
<purpose type="entertain" degree="low"/>