This class represents the timespan dictionary. This is definitively detailed in:.

The ISO PDF Specification, ISO 32000-1:2008 PDF 1.7; Table: 289, page 502.

The ISO PDF Specification, ISO 32000-2:2017 PDF 2.0; Table: 300, page 628.

A timespan dictionary specifies a time duration or offset. It is used in media duration and media offset dictionaries to express time values.

The S entry names the timespan subtype. The V entry holds the actual time value. For simple time durations, the value is a real number of seconds. The subtype determines how V is interpreted.

System.Object
    WebSupergoo.ABCpdf14.Elements.Element
       WebSupergoo.ABCpdf14.Elements.TimespanElement