number format="1. " level="multiple" count="chapter|sect1|sect2"
File: Data.xml
<book>
<title>Title of Book</title>
<chapter>
<title>First Chapter</title>
<sect1>
<title>First Section, First Chapter</title>
<figure>
<title>First picture in book</title>
<graphic fileref="pic1.jpg" />
</figure>
</sect1>
</chapter>
</book>
File: Transform.xslt
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
version="1.0">
<xsl:output method="xml" omit-xml-declaration="yes" indent="no" />
<xsl:template match="chapter">
<xsl:number format="1. " />
<xsl:apply-templates />
</xsl:template>
<xsl:template match="sect1">
<xsl:number format="1. " level="multiple" count="chapter|sect1" />
<xsl:apply-templates />
</xsl:template>
<xsl:template match="sect2">
<xsl:number format="1. " level="multiple" count="chapter|sect1|sect2" />
<xsl:apply-templates />
</xsl:template>
</xsl:stylesheet>
Output:
Title of Book
1.
First Chapter
1.1.
First Section, First Chapter
First picture in book
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