Staves as footnotes, and some random layout issues.

[Ted Lemon]

I'm trying to typeset a rather complicated manuscript and I've run into two 
brick walls right at the end of the process.   The first is that I can't for 
the life of me figure out how lilypond does staff fragments for manuscript 
annotation.   If you look at the bottom of the first page of the following PDF, 
you can see what I mean:

https://github.com/Abhayakara/music/blob/master/romanza.pdf?raw=true

I attached the two staff fragments to the bottom of an existing system because 
I can't think of any other way to place them where I want on the page.   This 
sort of works, but it comes with two problems.   First, they're too close to 
the system above, and so the spacing is all wrong on the page.   And second, 
they're the wrong size, and I can't see how to scale them.

The source code is here:

https://github.com/Abhayakara/music/blob/master/romanza.ly

Oh, I guess a third problem with these fragments is that it would be nice to 
eliminate the treble clef, but I have a feeling that's an easier problem to 
solve, so it's not the one I'm focusing on.   Any clues would be appreciated.

Oh, and of course it would also be nice if the a) and b) could be to the left 
of the staff fragment rather than above it, but again I suspect that this would 
be tractable if I had a better idea of how to do the actual layout.