In the beginning of your
<article> you can have a
<frontmatter> element that contains various items that would precede your first
<section> (respectively). Possibilities include
<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 6.14 for details.