... <para>If you want to encrypt/decrypt mail messages only, you can skip
this section and jump over to <xref linkend="enigmail"/>.</para> ...
When I'm using the DocBook XSL stylesheets to convert the respective
document to XHTML, the code shown above results in the following HTML code:
... <p><a id="d0e213">If you want to encrypt/decrypt mail messages only,
you can skip this section and jump over to </a><a href="#enigmail"
title="Enigmail">the section called Enigmail</a></p> ...
The double quotes around the word "Enigmail" cannot be displayed with
Internet Explorer ... and AFAIK they are not HTML-compliant.