72ad415f___MPEG_21_Multimedia_Framework__Description
[Part#] 11-PAT [Description] 
The term persistent association is used to categorise all the techniques for managing identification and description with content. This will include the carriage of identifiers within the context of different content file and transport formats, including file headers and embedded into content as a watermark. It also encompasses the ability for identifiers associated with content to be protected against their unauthorised removal and modification.
Information Technology — MPEG-21 Multimedia Framework
Description