I didn't think this was 'special' enought to be a UDF...

code:

	$keyarray=split("$labelkey","\")
	for $loop=0 to ubound($keyarray)
		$labelpath=$labelpath+$keyarray[$loop]+"\"
		if KEYEXIST("$labelpath")=0
			$=addkey("$labelpath")
			endif
		next
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