<timeline>	(timeline) provides a set of ordered points in time which can be linked to elements of a spoken text to create a temporal alignment of that text.
Attributes:	origin designates the origin of the timeline, i.e. the time at which it begins. Datatype: IDREF Values: must point to one of the <when> tags in its content. Default: #REQUIRED Note If the time of the origin is not known, it should be given an absolute value in descriptive terms, e.g. ``sometime on the night of the murder'' or ``unknown''. unit specifies the unit of time corresponding to the interval value of the timeline or of its constituent points in time. Datatype: NMTOKEN Values: a semi-closed list of recognized time units such as ``millisecond'', ``second'', ``minute''. Default: #IMPLIED interval specifies the numeric portion of a time interval Datatype: NUTOKEN Values: -1 or any nonnegative number Default: #IMPLIED Note The value -1 indicates uncertainty about all the intervals in the timeline; 0 indicates that all the intervals are evenly spaced, but the size of the intervals is not known; positive 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.
Example	<timeline id=tl1 origin=w0 unit=centisecond> <when id=w0 absolute='sometime Monday morning before Christmas' <when id=w1 since=w0 interval=-1> <when id=w2 since=w1 interval=10> <when id=w3 since=w2 interval=20> <when id=w4 since=w3 interval=15> <when id=w5 since=w4 interval=25> <when id=w6 since=w5 interval=10> </timeline>
Note	Occurs where??
Tagset	additional tag set for
Class	metadata [and indirectly also:] globincl
Filename	teilink2.dtd
Content:	one or more points in time, one of which is its origin
Parents	[none]
Children	when
Declaration	<!ELEMENT timeline - - ((when)+) > <!ATTLIST timeline %a.global origin IDREF #REQUIRED unit NMTOKEN #IMPLIED interval NUTOKEN #IMPLIED >
See	14.5.2