The <PerformanceDurationOverride> element occurs inside an <Extension> if the performances contained in the sibling <ScheduleExtension> are lasting a different length of time to the value defined in the <PerformanceDuration> (1.1.4) for the <Event>. If it does not occur then the performances will be the same length as the performances in the <Schedule>.
Attributes
none
Contained Within
Standard XML duration