<timeline>

<timeline> (時間進程) 提供一組整齊的時間順序點，可與口說文本的元素相連結，以建立該文本的時間組序。 [16.5.2 Placing Synchronous Events in Time]
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))
origin標出時間進程的開頭，例如開始時間。
狀態 非必備的
資料類型 

<rng:ref name="data.pointer"/>
data.pointer
值 if suppplied, must point either to one of the when elements in its content, or to another timeline element.
unit指出符合時間進程屬性interval的屬性值或是符合其接續時間點的時間單位。
狀態 非必備的
資料類型 

<rng:ref name="data.enumerated"/>
data.enumerated
被推薦的值包含:
d
(days)
h
(hours)
min
(minutes)
s
(seconds)
ms
(milliseconds)
interval指明時間區段中的數值部份
狀態 非必備的
資料類型 

<rng:choice>
 <rng:data type="float">
  <rng:param name="minExclusive">0</rng:param>
 </rng:data>
 <rng:value>regular</rng:value>
 <rng:value>irregular</rng:value>
</rng:choice>
xsd:float { minExclusive = "0" } | "regular" | "irregular"
值 a positive number, or one of the two special values irregular or regular.
屬於
model.global.meta
可包含在於
analysis: cl m phr s span w
core: abbr add addrLine address author bibl biblScope cit corr date del distinct editor email emph expan foreign gloss head headItem headLabel hi imprint item l label lg list measure mentioned name note num orig p pubPlace publisher q quote ref reg resp rs said series sic soCalled sp speaker stage street term textLang time title unclear
corpus: activity channel constitution derivation domain factuality interaction locale preparedness purpose
dictionaries: case colloc def dictScrap entry entryFree etym form gen gram gramGrp hom hyph iType lang lbl mood number orth per pos pron re sense stress subc syll tns usg xr
drama: actor camera caption castGroup castItem castList epilogue performance prologue role roleDesc set sound spGrp tech view
figures: cell figure table
header: authority change classCode distributor edition extent funder geoDecl handNote language licence principal scriptNote sponsor typeNote
linking: ab seg
msdescription: accMat acquisition additions catchwords collation colophon condition custEvent decoNote explicit filiation finalRubric foliation heraldry incipit layout material msItem musicNotation objectType origDate origPlace origin provenance rubric secFol signatures source stamp summary support surrogates watermark
namesdates: addName affiliation age birth bloc country death district education faith floruit forename genName geogName langKnown nameLink nationality occupation orgName persName person placeName region residence roleName settlement sex socecStatus surname
nets: graph
spoken: u writing
tagdocs: valDesc
textcrit: app lem rdg wit witDetail
textstructure: argument back body byline closer dateline div div1 div2 div3 div4 div5 div6 div7 docAuthor docDate docEdition docImprint docTitle epigraph floatingText front group imprimatur opener postscript salute signed text titlePage titlePart trailer
transcr: damage fw line metamark mod restore retrace sourceDoc supplied surface surfaceGrp surplus zone
verse: metSym rhyme
可包含
linking: when
宣告

<rng:element name="timeline">
 <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="origin">
   <rng:ref name="data.pointer"/>
  </rng:attribute>
 </rng:optional>
 <rng:optional>
  <rng:attribute name="unit">
   <rng:choice>
    <rng:value>d</rng:value>
    <rng:value>h</rng:value>
    <rng:value>min</rng:value>
    <rng:value>s</rng:value>
    <rng:value>ms</rng:value>
    <rng:data type="Name"/>
   </rng:choice>
  </rng:attribute>
 </rng:optional>
 <rng:optional>
  <rng:attribute name="interval">
   <rng:choice>
    <rng:data type="float">
     <rng:param name="minExclusive">0</rng:param>
    </rng:data>
    <rng:value>regular</rng:value>
    <rng:value>irregular</rng:value>
   </rng:choice>
  </rng:attribute>
 </rng:optional>
 <rng:oneOrMore>
  <rng:ref name="when"/>
 </rng:oneOrMore>
</rng:element>
element timeline
{
   att.global.attributes,
   att.global.linking.attributes,
   att.global.analytic.attributes,
   att.global.facs.attributes,
   att.global.change.attributes,
   attribute origin { data.pointer }?,
   attribute unit { "d" | "h" | "min" | "s" | "ms" | xsd:Name }?,
   attribute interval
   {
      xsd:float { minExclusive = "0" } | "regular" | "irregular"
   }?,
   when+
}
例子
<timeline xml:id="TL01" unit="ms">
 <when xml:id="TL-w0" absolute="11:30:00"/>
 <when xml:id="TL-w1" interval="unknown" since="#TL-w0"/>
 <when xml:id="TL-w2" interval="100" since="#TL-w1"/>
 <when xml:id="TL-w3" interval="200" since="#TL-w2"/>
 <when xml:id="TL-w4" interval="150" since="#TL-w3"/>
 <when xml:id="TL-w5" interval="250" since="#TL-w4"/>
 <when xml:id="TL-w6" interval="100" since="#TL-w5"/>
</timeline>