<refsection><info><title>Description</title></info>
-<para>If non-zero,
-<link xlink:href="http://projects.oucs.ox.ac.uk/passivetex/">PassiveTeX</link>
-extensions will be used. At present, this consists of PDF bookmarks
-and sorted index terms.
-</para>
+<important><para>The PassiveTeX XSL-FO processor is
+no longer supported by DocBook XSL, beginning with version 1.78.</para></important>
-<para>This parameter can also affect which graphics file formats
-are supported</para>
-
-<note>
- <para>PassiveTeX is incomplete and development has ceased. In most cases,
-another XSL-FO engine is probably a better choice.</para>
-</note>
+<para>PassiveTeX was never a complete implementation of
+XSL-FO, and development has ceased. Setting this parameter will
+have no effect on the output.</para>
</refsection>
</refentry>