<opener>

<opener> 구역, 특히 편지의 시작부에 서문군으로 나타나는 날짜 표시란, 필자명 행, 인사말, 그리고 유사 구를 합하여 모아 놓는다. [4.2.4 Content of Textual Divisions 4.2 Elements Common to All Divisions]
모듈textstructure — 4 Default Text Structure
속성att.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))
에 의해 사용된
model.divTopPart
에 의해 포함된
core: lg list
drama: castList epilogue performance prologue
textstructure: body div div1 div2 div3 div4 div5 div6 div7 group postscript
포함할 수 있다
analysis: c cl interp interpGrp m pc phr s span spanGrp w
certainty: certainty precision respons
core: abbr add address binaryObject cb choice corr date del distinct email emph expan foreign gap gb gloss graphic hi index lb measure measureGrp mentioned milestone name note num orig pb ptr ref reg rs sic soCalled term time title unclear
dictionaries: lang oRef oVar pRef pVar
figures: figure formula notatedMusic
gaiji: g
header: idno
iso-fs: fLib fs fvLib
linking: alt altGrp anchor join joinGrp link linkGrp seg 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 specDesc specList tag val
textcrit: app witDetail
textstructure: argument byline dateline epigraph salute signed
transcr: addSpan am damage damageSpan delSpan ex fw handShift listTranspose metamark mod redo restore retrace space subst substJoin supplied surplus undo
verse: caesura rhyme
선언

<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.gLike
    | model.phrase
    | argument
    | byline
    | dateline
    | epigraph
    | salute
    | signed
    | model.global
   )*
}
예
<opener>
 <dateline>Walden, this 29. of August 1592</dateline>
</opener>
예
<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>