<ab>

<ab> (匿名區塊) 包含文件中任何隨機組合性層次的單元，匿名收容類似一個段落、但不包含段落語義的字詞或中間層元素。 [16.3 Blocks, Segments, and Anchors]
組件linking — 16 Linking, Segmentation, and Alignment
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)) att.typed (@type, @subtype) att.declaring (@decls)
part標明區塊是否完全。
狀態 非必備的
資料類型 

<rng:ref name="data.enumerated"/>
data.enumerated
合法的值是:
Y
(yes) 區塊不完全
N
(no) 區塊完全，或完全程度不明 [預設值]
I
(initial) 不完全區塊的起始部分
M
(medial) 不完全區塊的中段部分
F
(final) 不完全區塊的末端部分
屬於
model.pLike
可包含在於
core: item note q quote said sp stage
corpus: particDesc setting settingDesc
drama: castList epilogue performance prologue set view
figures: figure
header: application availability cRefPattern calendar change correction editionStmt editorialDecl encodingDesc handNote hyphenation interpretation licence normalization projectDesc publicationStmt quotation refsDecl samplingDecl scriptNote segmentation seriesStmt sourceDesc stdVals typeNote
msdescription: accMat acquisition additions binding bindingDesc collation condition custEvent custodialHist decoDesc decoNote filiation foliation handDesc history layout layoutDesc msContents msDesc msItem msItemStruct msPart musicNotation objectDesc origin physDesc provenance recordHist scriptDesc seal sealDesc source support supportDesc surrogates typeDesc
namesdates: climate event langKnowledge listRelation nym org person personGrp place population relationGrp state terrain trait
spoken: broadcast equipment recording recordingStmt scriptStmt
tagdocs: exemplum remarks specGrp
textstructure: argument body div div1 div2 div3 div4 div5 div6 div7 epigraph postscript
transcr: metamark
verse: metDecl
可包含
analysis: c cl interp interpGrp m pc phr s span spanGrp w
certainty: certainty precision respons
core: abbr add address bibl biblStruct binaryObject cb choice cit corr date del desc distinct email emph expan foreign gap gb gloss graphic hi index label lb list listBibl measure measureGrp mentioned milestone name note num orig pb ptr q quote ref reg rs said sic soCalled stage term time title unclear
dictionaries: lang oRef oVar pRef pVar
drama: camera caption castList move sound tech view
figures: figure formula notatedMusic table
gaiji: g
header: biblFull 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 msDesc objectType origDate origPlace secFol signatures stamp watermark width
namesdates: addName affiliation bloc climate country district forename genName geo geogFeat geogName listEvent listNym listOrg listPerson listPlace listRelation location nameLink offset orgName persName placeName population region relationGrp roleName settlement state surname terrain trait
spoken: incident kinesic pause shift vocal writing
tagdocs: att classSpec code eg egXML elementSpec gi ident listRef macroSpec moduleSpec specDesc specGrp specGrpRef specList tag val
textcrit: app listWit witDetail
textstructure: floatingText
transcr: addSpan am damage damageSpan delSpan ex fw handShift listTranspose metamark mod redo restore retrace space subst substJoin supplied surplus undo
verse: caesura rhyme
宣告

<rng:element name="ab">
 <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:ref name="att.typed.attributes"/>
 <rng:ref name="att.declaring.attributes"/>
 <rng:optional>
  <rng:attribute name="part" a:defaultValue="N">
   <rng:choice>
    <rng:value>Y</rng:value>
    <rng:value>N</rng:value>
    <rng:value>I</rng:value>
    <rng:value>M</rng:value>
    <rng:value>F</rng:value>
   </rng:choice>
  </rng:attribute>
 </rng:optional>
 <rng:ref name="macro.paraContent"/>
</rng:element>
element ab
{
   att.global.attributes,
   att.global.linking.attributes,
   att.global.analytic.attributes,
   att.global.facs.attributes,
   att.global.change.attributes,
   att.typed.attributes,
   att.declaring.attributes,
   attribute part { "Y" | "N" | "I" | "M" | "F" }?,
   macro.paraContent
}
例子
<div type="book" n="Genesis">
 <div type="chapter" n="1">
  <ab>In the beginning God created the heaven and the earth.</ab>
  <ab>And the earth was without form, and void; and
     darkness was upon the face of the deep. And the
     spirit of God moved upon the face of the waters.</ab>
  <ab>And God said, Let there be light: and there was light.</ab>
<!-- ...-->
 </div>
</div>