Bookmap metadata elements
The Bookmap specialization of ditamap supports standard book production for collections of DITA topics. This section contains the metadata elements used by bookmap to store book-related metadata.
The OASIS document type for the bookmap specialization includes the xNAL domain specialization for describing the author or authors of a document. All elements that appear in that domain (the <authorinformation> element and all of its descendants) are described in the xNAL domain section, rather than in this bookmap metadata section.