Interfaces
 InterfaceDescription
 ContentTracker 
 Timeline 
 TimelineHold The TimelineHold describes a hold as a point above which the media player should not attempt to download data.
 TimelineMarker The TimelineMarker describes a marker on the timeline
Classes
 ClassDescription
 ContentResolver Base class for various content resolvers.
 Opportunity Base class for all opportunity classes.
 Placement Class which wraps information related to timeline placement.
 PlacementTest 
 PlacementType Enumeration of placement types.
 TimelineOperation Base class for all operations which affect the timeline.