<xsl:stylesheet xmlns:xsl = "http://www.w3.org/1999/XSL/Transform" version =
"1.0" >
<xsl:output method =
"xml" indent =
"yes" />
<xsl:template match =
"AAA | BBB" >
<xsl:copy >
<xsl:apply-templates />
</xsl:copy>
</xsl:template>
<xsl:template match =
"CCC | DDD" >
<xsl:copy />
</xsl:template>
</xsl:stylesheet>
Author: Miloslav Nic [nicmila@idoox.com]