Valid XSL

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
	<xsl:output method="html"/>
	<xsl:template match="*">
		<h2>Detecting the underlying XSLT engine ...</h2>
		<b>Version:</b> <xsl:value-of select="system-property('xsl:version')" /><br/>
		<b>Vendor:</b> <xsl:value-of select="system-property('xsl:vendor')" /><br/>
		<b>Vendor URL:</b> <xsl:value-of select="system-property('xsl:vendor-url')" /><br/>
	</xsl:template>
</xsl:stylesheet>