<xsl:stylesheet version="1.0" 
   xmlns:xsl="http://www.w3.org/1999/XSL/Transform" 
   xmlns:xslout="http://dummy.org" >
  <xsl:namespace-alias stylesheet-prefix="xslout" result-prefix="xsl"  />
<xsl:output method="xml" indent="yes" />
<xsl:template match="/">
     <xslout:stylesheet version="1.0" >
        <xslout:output method="xml" indent="no" />
      ....
     </xslout:stylesheet>
</xsl:template>
</xsl:stylesheet>
