Thus, each element shall have a default meaning. In this case the metadata would not be regarded as falling within the Dublin Core list of elements. Further principles for subelements were established at DC5, which will be reported in the Subelement Working Group report. There was little discussion about scheme qualifiers, so that information in this document is preliminary. The latter document has been heavily used, but the number of qualifiers is considerably lessened here.
All qualifiers are optional.
If the default is used, no qualifier is given. For example, authors in the case of written documents, artists, photographers, or illustrators in the case of visual resources. Only address is included here because it has been used frequently in current metadata projects. Email may be considered an alternative way of specifying the author. The topic of the resource.