DOCBOOK-APPS: callout bug in fo?

[Dave Pawson <daveP@dpawson.freeserve.co.uk>]

Trying to get callout graphics to work in xsl stylesheets, 1.38

<screen format="linespecific">&lt;t:titlepage<co id="ttlpg"/> element=<co id="elem"/>"book" wrapper=<co id="t.wrap"/>"fo:block"&gt;
<co id="t.ttlpgcontent"/>    &lt;t:titlepage-content side="recto"&gt;
<co id="t.other"/>      &lt;title predicate="[1]"
             fo:font-size="24pt"
             fo:space-before="18pt"
             fo:font-weight="bold"
             fo:font-family="{$title.font.family}"/&gt;
 
&lt;/t:titlepage&gt;</screen>

  <calloutlist>
    <callout arearefs="ttlpg">
      <para>The <sgmltag>titlepage-content</sgmltag> element does this and that.</para>
    </callout>
    <callout arearefs="elem">
      <para>The element does that.</para>
    </callout>
  </calloutlist>

  

The 1.png image is produced within the listing,
but the calloutlist produces the id value followed by ????
e.g. ttlpg: ???? 


I've set the two params to enable callout graphics and
the path of the co graphics.

Regards DaveP