The prolog elements represent the <metadata>
associated with a document.
The primary types of information that you can store in the
prolog include:
- author
- copyright information
- critical tracking dates
- permissions for use/management of the content
- extensive metadata about the content of the document
- a resourceid that allows a topic to be associated with external resources
such as linking to programming components as contextual help
Most of the metadata in a topic prolog can also be authored
in a DITA map, in the map's <topicmeta> element.