tworthy and consistent fashion. DIPs may simply be a copy of AIPs, or may 
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result from a simple format transformation of an AIP. But in other cases, they may be derived 
in complex ways. A user may request a DIP consisting of the title pages from all e-books 
published in a given period, for instance, which will require these to be extracted from many 
different AIPs. Or a repository may disseminate auto