[maxmsp] Confusion by MSP Tutorial

I'm a bit confused by one of the examples shown and wonder if anyone can
offer some explanation.
The tutorial I refer to is MSP tutorials # 7 Additive Synthesis,
specifically the subpatcher "partial~" on page 99.
Supposedly this replaces an earlier patch that was comprised of 6 cosine
waves.
My confusion though is what is shown actually the replacement for all 6 ?
And , could I send say 6 different frequencies for the partials all at the
same time ?


TIA
DA
-- 
http://en.wikipedia.org/wiki/Dark_ambient
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