Accordion transposition notation

[Mike Solomon]

Hey all,

If I want an accordion player to use stops to play a passage one octave under 
the written pitch, I was wondering what the appropriate notation was?  I found 
the info about discant notation in the manual, but I'm not sure if those 
correspond to a change in octave (i.e. by using the bassoon, is the pitch 
automatically played an octave under?).

Thanks for your help!
~Mike