6cdd3854__Short_History_of_Usage_Rights__XrML_2_0
[MPEG-21] Adapt [RDD Definition] To ChangeTransiently an existing Resource to Derive a new Resource. With Adapt, two distinct Resources will exist as a result of the process, one of which is the original Resource in unchanged form, and one of which is newly made. Changes can include the addition to and removal of elements of the original Resource, including the Embedding of other Resources. Changes can be made temporarily to the original resource in the course of the Adapt process, but such changes are not saved in the original Resource at the end of the process. [XrML 2.0] 
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XrML - A Short History of Usage Rights
XrML 2.0