The following is the reference definition of the Dublin Core Metadata
   Element Set.  Further information about the Dublin Core Metadata
   Element Set is available at [1]:

       http://purl.org/metadata/dublin_core

   In the element descriptions below, each element has a descriptive
   name intended to convey a common semantic understanding of the
   element, as well as a formal single-word label intended to make the
   syntactic specification of elements simpler for encoding schemes.




 
RFC 2413      Dublin Core Metadata for Resource Discovery September 1998


   Although some environments, such as HTML, are not case-sensitive, it
   is recommended best practice always to adhere to the case conventions
   in the element labels given below to avoid conflicts in the event
   that the metadata is subsequently extracted or converted to a case-
   sensitive environment, such as XML (Extensible Markup Language) [2].

   Each element is optional and repeatable.  Metadata elements may
   appear in any order.  The ordering of multiple occurrences of the
   same element (e.g., Creator) may have a significance intended by the
   provider, but ordering is not guaranteed to be preserved in every
   system.

   To promote global interoperability, a number of the element
   descriptions suggest a controlled vocabulary for the respective
   element values.  It is assumed that other controlled vocabularies
   will be developed for interoperability within certain local domains.

   The metadata elements fall into three groups which roughly indicate
   the class or scope of information stored in them: (1) elements
   related mainly to the Content of the resource, (2) elements related
   mainly to the resource when viewed as Intellectual Property, and (3)
   elements related mainly to the Instantiation of the resource.

        Content          Intellectual Property       Instantiation
        -----------      ---------------------       -------------
        Title                 Creator                  Date
        Subject               Publisher                Format
        Description           Contributor              Identifier
        Type                  Rights                   Language
        Source
        Relation
        Coverage

4.1.  Title                             Label: "Title"

   The name given to the resource, usually by the Creator or Publisher.

4.2.  Author or Creator                 Label: "Creator"

   The person or organization primarily responsible for creating the
   intellectual content of the resource.  For example, authors in the
   case of written documents, artists, photographers, or illustrators in
   the case of visual resources.









 
RFC 2413      Dublin Core Metadata for Resource Discovery September 1998


4.3.  Subject and Keywords              Label: "Subject"

   The topic of the resource.  Typically, subject will be expressed as
   keywords or phrases that describe the subject or content of the
   resource.  The use of controlled vocabularies and formal
   classification schemes is encouraged.

4.4.  Description                       Label: "Description"

   A textual description of the content of the resource, including
   abstracts in the case of document-like objects or content
   descriptions in the case of visual resources.

4.5.  Publisher                         Label: "Publisher"

   The entity responsible for making the resource available in its
   present form, such as a publishing house, a university department, or
   a corporate entity.

4.6.  Other Contributor                 Label: "Contributor"

   A person or organization not specified in a Creator element who has
   made significant intellectual contributions to the resource but whose
   contribution is secondary to any person or organization specified in
   a Creator element (for example, editor, transcriber, and
   illustrator).