| AccessRightsInformation | The information that identifies the access restrictions pertaining to the
 Content Data Object, including the legal framework, licensing terms, and access
 control. | 
| AndGroup | All the elements of a AndGroup must be used together to be useful. | 
| ArchivalInformationCollection | An Archival Information Package whose Content Information is an aggregation of
 other Archival Information Packages.; its PDI must include a description of the
 collection criteria and process. | 
| ArchivalInformationPackage | An Information Package, consisting of the Content Information and the
 associated Preservation Description Information (PDI), which is preserved
 within an OAIS. | 
| ArchivalInformationUnit | An Archival Information Package where the Content Information does not include
 any other Archival Information Packages. | 
| BaseGroup | Group of RepresentationInformation, which includes the associated classification. | 
| CollectionDescription | A type of Package Description that is specialized to provide information about an Archival Information Collection 
 (or an Access Collection) for use by Access Aids [OAIS]. | 
| ContentInformation | A set of information that is the original target of preservation. | 
| ContextInformation | The information that documents the relationships of the Content Data Object to
 its environment. | 
| DataObject | Either a Physical Object or a Digital Object. | 
| DescriptiveInformation | An Information Object which is a set of information, consisting primarily of
 Package Descriptions, which is provided to Data Management to support the
 finding, ordering, and retrieving of OAIS information holdings by Consumers. | 
| DigitalObject | An object composed of a set of bit sequences. | 
| DisseminationInformationPackage | An Information Package, derived from one or more AIPs, and sent by Archives to
 the Consumer in response to a request to the OAIS. | 
| FixityInformation | The information which documents the mechanisms that ensure that the Content
 Data Object has not been altered in an undocumented manner. | 
| Identifier | An identifier is a name that identifies (that is, labels the identity of)
 either a unique object or a unique class of objects, where the "object" or
 class may be an idea, physical countable object (or class thereof), or physical
 noncountable substance (or class thereof). | 
| InformationObject | A Data Object together with its Representation Information [OAIS]
 Information: Any type of knowledge that can be exchanged. | 
| InformationPackage | A logical container composed of optional Information Object(s). | 
| OrGroup | The elements of a OrGroup are alternatives. | 
| OtherRepInfo | A type of Representation Information which cannot easily be classified as
 Structure Representation Information or Semantic Representation Information. | 
| PackageDescription | The information intended for use by Access Aids. | 
| PackagingInformation | The information that describes how the components of an Information Package are
 logically or physically bound together and how to identify and extract the
 components. | 
| PersistentIdentifier | A long-lasting Identifier. | 
| PhysicalObject | An object (such as a moon rock, bio-specimen, microscope slide) with physically
 observable properties that represent information that is considered suitable
 for being adequately documented for preservation, distribution, and independent
 usage. | 
| PreservationDescriptionInformation | The information, which along with Representation Information, is
 necessary for adequate preservation of the Content Data Object and which can be
 categorized as Provenance Information, Context Information, Reference
 Information, Fixity Information, and Access Rights Information. | 
| ProvenanceInformation | The information that documents the history of the Content Data Object. | 
| ReferenceInformation | The information that is used as an identifier for the Content Data Object. | 
| RepInfoAndGroup | All the elements of a ReInfoAndGroup must be used together to be useful. | 
| RepInfoCategory | A classification of RepInfo to facilitate locating the kind of RepInfo wanted. | 
| RepInfoGroup | Group of RepresentationInformation, which includes the associated classification. | 
| RepInfoOrGroup | The elements of a RepInfoOrGroup are alternatives. | 
| RepresentationInformation | The information that maps a Data Object into more meaningful concepts so that
 the Data Object may be understood in ways exemplified by Preservation
 Objectives. | 
| RepresentationInformationNetwork | The set of Representation Information that fully describes the meaning of a
 Data Object. | 
| SemanticRepInfo | The Representation Information that further describes the meaning of the Data
 Object, and its parts or elements, beyond that provided by the Structure
 Representation Information. | 
| StructureRepInfo | The Representation Information that imparts information about the arrangement
 of and the organization of the parts or elements of the Data Object. | 
| SubmissionInformationPackage | An Information Package that is delivered by the Producer to the OAIS for use in
 the construction or update of one or more AIPs and/or the associated
 Descriptive Information. | 
| UniquePersistentIdentifier | A Persistent Identifier which is unique within a specific naming convention. |