[rrd-users] multiple graphs

[Seitan end Yvl]

Hello.
I have  a question, 
lets say i want to draw mail/spam/virus graph.
I want lines to be filled (AREA).
lets say data is like this
time|mail|spam|virus
xx10|  15 | 4  |  2
xx20| 14   | 3  |  6


so here's what happen:
files tilmeline is drawn normally, - all lines are visible,
but the second line is bad, because, 'virus' line is drawn over the
'spam' line, because its bigger, and I can't see 'spam'.
Is there any other solution, or i will have to make unfilled 'spam' and
'virus' lines?
Thank you.

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