<!DOCTYPE note PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN"
          "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd">
<note><title>Upcoming Changes</title>
<para>
Future versions of this feature may not be backward-compatible.
Consider implementing the revised interface now.
</para>
</note>