<frontmatter> – general info about a bookPossible Contents: title, author+, subtitle?, date?, keywords?, year?, city?, graphics?, typeset?, legalnotice?
Description: Everything that is normally mentioned before the table of contents. Only title and one author is a must, the rest if you wish, but the given order is (unfortunately) mandatory. The first mentioned author will also be printed after the copyright.
<author> has to be simple, i.e. it mustn't contain any
additional information such as institute or email address. If it
does, that is ignored. (In contrast to in articles.)
<frontmatter>
<title>Beyond Gravitation</title>
<author>Wyle E Coyote</author>
<author>Roadrunner</author>
<subtitle>An Introduction</subtitle>
<date>23. July 1968</date>
<keywords>ACME, levers, umbrellas, earthquake pills,
rocks</keywords>
<year>1969</year>
<city>Toontown</city>
<graphics kind="bitmap" file="coverimage"/>
<typeset>The authors.</typeset>
<legalnotice>All rights reserved.</legalnotice>
</frontmatter>