Multiple RRD graphs and text instance

Hi,

When creating custom graph from multiple RRD, every GPRINT and COMMENT are repeated for each FNPATTERN.
Is there a way to have text only written once.
Something like:
	(...)
	COMMENT:@RRDPARAM@ title
	GPRINT:val at RRDIDX@:LAST:%4.0lf
	GPRINT:val at RRDIDX@:MIN:%4.0lf
	GPRINT:val at RRDIDX@:MAX:%4.0lf
	GPRINT:val at RRDIDX@:AVERAGE:%4.0lf\l
	COMMENT:Last comment written only once
That will graph:
	param0 title 0 0 0 0
	param1 title 0 0 0 0
	param2 title 0 0 0 0
	Last comment written only once

TIA,
	Jo