within the s.pdf document rather than just opening the "s.pdf" document?
If so, how would I change
   <fo:basic-link external-destination="s.pdf">
to do that?

Thanks,
Mark

Listing fragment 1: set Id
<fo:block xsl:use-attribute-sets="subject">
    <xsl:if test=". eq 'St. Adalbert Association'">
            <xsl:attribute name="id">block1</xsl:attribute>
    </xsl:if>
    <xsl:value-of select="."/>
    <fo:wrapper xsl:use-attribute-sets="catalog-numbers">
         <xsl:call-template name="catalog-name-and-number"/>
     </fo:wrapper>
     <xsl:apply-templates select="../Xref" mode="set-up"/>
  </fo:block>