If you keep your version numbers 'cleanish' so that
xslt can use them, then it will handle various constructs
to keep the output 'clean' to a version.
Example below.
HTH DaveP
<document>
<title>Here goes the title</title>
<sect>
<vsn>rev2.1</vsn>
</sect>
<sect>
<vsn>rev2.2</vsn>
</sect>
</document>
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="text"/>
<xsl:template match="document">
<xsl:variable name="rev1"
select="number(substring-after(sect[1]/vsn,'rev'))"/>
<xsl:variable name="rev2"
select="number(substring-after(sect[2]/vsn,'rev'))"/>
<xsl:if test="$rev2 > $rev1">
<xsl:value-of select="$rev1"/>
<xsl:value-of select="$rev2"/>
<xsl:text>Rev 2 greater than rev 1</xsl:text>
</xsl:if>
</xsl:template>
</xsl:stylesheet>
