A bookmap is a specialized DITA map that allows you to organize and print your DITA topics as a book. A bookmap defines elements such as chapter and appendix. A DITA map does not impose structural rules with regards to the sequence of the topic references. However, to maintain a book structure, the bookmap defines rules such as disallowing a chapter element after the appendix element.
See the specifications on.
The FrameMaker user interface elements for a bookmap are identical to the elements for a DITA map. For example, by default, the bookmap opens in the Resource Manager.
1)Choose DITA > New DITA File > New <bookmap>.
2)The chapter, part, appendix, and appendices elements are referenced elements.
3)You can include relationship tables in a bookmap.