Encoding Initiative 
UML 
Unified Modeling Language 
XML 
Extensible Markup Language 
1.5.2 TERMINOLOGY 
Digital preservation interests a range of different communities, each with a distinct 
vocabulary and local definitions for key terms. A glossary is included in this document, but it 
is important to draw attention to the usage of several key terms. 
In general, key terms in this document have been adopted from the OAIS Reference Model. 
One of the great strengths of the OAIS Reference Model has been to 