In the beginning of your <book> or <article> you can have a <frontmatter> element that contains various items that would precede your first <chapter> or <section> (respectively). Possibilities include <titlepage>, <colophon>, <biography>, <abstract>, <dedication>, <acknowledgement>, <foreword>, and <preface>. Some of these may be duplicated (e.g. several prefaces for multiple editions), many of these items are restricted to books (e.g. a foreword), and some items are restricted to articles (e.g. an abstract). The DTD (<<dtd-info>>) will help you place them in the right order in your source. See Section 6.13 for details.