set A collection of books

book A book

dedication The dedication of a book or other component

acknowledgements Acknowledgements of a book or other component

colophon Text at the back of a book describing facts about its production

appendix An appendix in a book or article

chapter A chapter, as of a book

part A division in a book

preface Introductory matter preceding the first chapter of a book

partintro An introduction to the contents of a part

section A recursive section

simplesect A section of a document with no subdivisions

article An article faq A collection of frequently asked questions. journalarticle An article in a journal or other periodical. productsheet A description of a product. specification A specification. techreport A technical report. whitepaper A white paper. Identifies the nature of the article