<!DOCTYPE equation PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN"
          "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd">
<equation><title>Fermat's Last Theorem</title>
  <alt>x^n + y^n &ne; z^n &forall; n &gt; 2</alt>
  <graphic fileref="figures/fermat.png"/>
</equation>