fn:system-property( $property-name as xs:string ) as xs:string
Returns a string representing the value of the system property identified by the name. If there is no such system property, the zero-length string is returned.
This function is only available in XSLT; it is not available in XQuery.
xquery version "1.0-ml"; xdmp:xslt-eval( <xsl:stylesheet version="2.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"> <xsl:template match="foo"> <xsl:value-of select="system-property('xsl:is-schema-aware')"/> </xsl:template> </xsl:stylesheet>, document{<foo>hello there</foo>}) => yes