if($line =~ /<P_sec\d>(?:<\w>)?(<xref ref-type="page" id="page_\d+"\/>)?(?:<\w>)?(References|Note|Acknowledgement)(?:<\/\w>)?<\/P_sec\d>/<\/body>\n$&/si)
	{
	}
	else{
	$line .= "</body>\n";
	}