Is the number of staff groups per page settable?

[Doug Asherman]

Hi:

After much use of lilypond, I've noticed that it's quite good at page 
layout; if I leave most of the settings to their defaults, I get a nice 
four staff groups per page, beautifully spaced.

What I'm wondering is: is there a variable I can set somewhere to get an 
arbitrary number of staff groups per page and have lilypond handle the 
rest of the formatting? That is, I'd like to have three or five staff 
groups per page and have lilypond handle the global staff size and all that.

Is this possible?

Thanks,

Doug