Extends owl-time ontology (http://www.w3.org/2006/time) with support for several timelines, acting as a backbone to adress time interval/instants. Added some "shortcuts" to directly identify Interval and Instant through a time line and a set of literals. Mainly designed with a multimedia use-case in mind 1 this is the `universal' time line -- can adress time intervals on it using date/dateTime -- UTC 1 Describe the relation between a continuous time-line and its sampled equivalent Allows to map two time lines together 1 Represents a linear and coherent piece of time -- can be either abstract (such as the one behind a score) or concrete (such as the universal time line). Two timelines can be mapped using timeline maps. Semi infinite time line... canonical coordinate system --> adressed through xsd:duration since the instant 0. A "physical" time-line (the universal time line (UTC)) is an instance of this class. Other time zones consists in instances of this class as well, with a "shifting" time line map relating them to the universal time line map. Abstract time lines may be used as a backbone for Score, Works, ... This allows for TimeLine maps to relate works to a given performance (this part was played at this time). 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Describes the relation between a discrete time line and its windowed equivalent 1 Well... a discrete time line, addressed through integers A property enabling to adress a time point P through the duration of the interval [0,P[ on a continuous timeline A property enabling to adress a time point P through the duration of the interval [0,P[ on a continuous timeline A property enabling to adress a time point P through the duration of the interval [0,P[ on a continuous timeline refers to a point on the time line