<timeline>

<timeline> (timeline) 時間的なまとまりを示すために，発話テキストの要素をリンクすることがで きる，時間軸上の順序付き時点の集合を示す． 16.5.2 Placing Synchronous Events in Time
モジュールlinking — 16 Linking, Segmentation, and Alignment
属性
origin 時間軸の起点示す．すなわち，始点の時間．
状態 必須
データ型 
data.pointer
値 must point either to one of the <when> elements in its content, or to another <timeline> element.
解説
If the absolute value for the time of origin is not known, an arbitrary time (such as 00:00) should be used.
unit 時間軸を構成する属性intervalの値に対応する，時間単位 を特定する．
状態 使えるならば必須
データ型 
data.enumerated
提案する値は以下の通り:
d
(days)
h
(hours)
min
(minutes)
s
(seconds)
ms
(milliseconds)
interval 間隔を表す数値を示す．
状態 任意
データ型 
xsd:float { minExclusive = "0" } | "regular" | "irregular"
値 a positive number, or one of the two special values irregular or regular.
解説
The value irregular indicates uncertainty about all the intervals in the timeline; the value regular indicates that all the intervals are evenly spaced, but the size of the intervals is not known; numeric values indicate evenly spaced values of the size specified. If individual points in time in the timeline are given different values for the interval attribute, those values locally override the value given in the timeline.
当該モジュールを使用するもの model.global.meta
下位
linking: when
宣言
element timeline
{
   att.global.attributes,
   attribute origin { data.pointer },
   attribute unit { "d" | "h" | "min" | "s" | "ms" | xsd:Name }?,
   attribute interval
   {
      xsd:float { minExclusive = "0" } | "regular" | "irregular"
   }?,
   when+
}
例
<timeline xml:id="TL01" origin="#TL-w0" 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>
解説
one or more points in time, one of which is its origin