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    <pre wrap="">I struggle with pagebreak before sections level 1.

I have this start of the file:

<?xml version="1.0" encoding="UTF-8"?>
<?xml-model href=<a class="moz-txt-link-rfc2396E" href="http://docbook.org/xml/5.1/rng/docbookxi.rng">"http://docbook.org/xml/5.1/rng/docbookxi.rng"</a>
schematypens=<a class="moz-txt-link-rfc2396E" href="http://relaxng.org/ns/structure/1.0">"http://relaxng.org/ns/structure/1.0"</a>?>
<?xml-model href=<a class="moz-txt-link-rfc2396E" href="http://docbook.org/xml/5.1/sch/docbook.sch">"http://docbook.org/xml/5.1/sch/docbook.sch"</a>
type="application/xml" schematypens=<a class="moz-txt-link-rfc2396E" href="http://purl.oclc.org/dsdl/schematron">"http://purl.oclc.org/dsdl/schematron"</a>?>
<?xml-stylesheet type="text/xsl" href="../xslt/fo/Falterbuechlein.xsl"?>
<book xmlns=<a class="moz-txt-link-rfc2396E" href="http://docbook.org/ns/docbook">"http://docbook.org/ns/docbook"</a> xml:lang="de"
xmlns:xi=<a class="moz-txt-link-rfc2396E" href="http://www.w3.org/2001/XInclude">"http://www.w3.org/2001/XInclude"</a>

Falterbuechlein.fo looks like this:

</pre>
    <blockquote type="cite" style="color: #000000;">
      <pre wrap=""><?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet xmlns:xsl=<a class="moz-txt-link-rfc2396E" href="http://www.w3.org/1999/XSL/Transform">"http://www.w3.org/1999/XSL/Transform"</a>
    xmlns:xs=<a class="moz-txt-link-rfc2396E" href="http://www.w3.org/2001/XMLSchema">"http://www.w3.org/2001/XMLSchema"</a>
    xmlns:xd=<a class="moz-txt-link-rfc2396E" href="http://www.oxygenxml.com/ns/doc/xsl">"http://www.oxygenxml.com/ns/doc/xsl"</a>
    exclude-result-prefixes="xs xd"
    version="2.0">
    <xd:doc scope="stylesheet">
        <xd:desc>
            <xd:p><xd:b>Created on:</xd:b> Aug 4, 2018</xd:p>
            <xd:p><xd:b>Author:</xd:b> bk</xd:p>
            <xd:p></xd:p>
        </xd:desc>
    </xd:doc>
    <xsl:attribute-set name="section.level1.properties">
        <xsl:attribute name="break-before">page</xsl:attribute>
    </xsl:attribute-set>
</xsl:stylesheet>
</pre>
    </blockquote>
    <pre wrap="">However, it is not used. What to do to make it working?
</pre>
    <pre class="moz-signature" cols="72">-- 
spitzhalde9
D-79853 lenzkirch
<a class="moz-txt-link-abbreviated" href="mailto:bernhard.kleine@gmx.net">bernhard.kleine@gmx.net</a>
<a class="moz-txt-link-abbreviated" href="http://www.b-kleine.com">www.b-kleine.com</a>, <a class="moz-txt-link-abbreviated" href="http://www.urseetal.net">www.urseetal.net</a>
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