<opener>

<opener> テキスト部分の始まりに,日付欄,署名欄,挨拶文言など,前置き的な部分 としてあるものをまとめる.典型例は,手紙の場合である. [4.2 Elements Common to All Divisions]
モジュールtextstructure — Default Text Structure
属性att.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))
クラブのメンバー
上位
下位
宣言

<rng:element name="opener">
 <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:text/>
   <rng:ref name="model.gLike"/>
   <rng:ref name="model.phrase"/>
   <rng:ref name="argument"/>
   <rng:ref name="byline"/>
   <rng:ref name="dateline"/>
   <rng:ref name="epigraph"/>
   <rng:ref name="salute"/>
   <rng:ref name="signed"/>
   <rng:ref name="model.global"/>
  </rng:choice>
 </rng:zeroOrMore>
</rng:element>
element opener
{
   att.global.attributes,
   att.global.linking.attributes,
   att.global.analytic.attributes,
   att.global.facs.attributes,
   att.global.change.attributes,
   (
      text
    | model.gLikemodel.phraseargumentbylinedatelineepigraphsalutesignedmodel.global
   )*
}
<opener>
 <dateline>Walden, this 29. of August 1592</dateline>
</opener>
<opener>
 <dateline>
  <name type="place">Great Marlborough Street</name>
  <date>November 11, 1848</date>
 </dateline>
 <salute>My dear Sir,</salute>
</opener>
<p>I am sorry to say that absence from town and other circumstances have prevented me from
earlier enquiring...</p>