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<!DOCTYPE preface PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
"http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd">
<preface id="preface">
 <title>Preface</title>
 <section>
  <title>Using Code Examples</title>
  <para>
   Selling or distributing a CD-ROM of examples from O’Reilly books does require
   permission. Answering a question by citing this book and quoting example code
   does not require permission.
  </para>
 </section>
</preface>
