Prev specifies the previous document in a suggested sequence of reading. Contents specifies a table of contents for the document. Index gives an index for the document. Glossary gives a glossary of terms used in the document. Copyright specifies a document with copyright information.
Chapter specifies the chapter of a collection of documents.
Section specifies the section of a collection of documents. Subsection specifies a subsection of a collection of documents. Appendix gives an appendix for the collection of documents. Help specifies a help document. Bookmark refers to a key related document.