[mod_python] Apache Handler docs

I'm interested in gaining a full understanding of how Apache handlers work.
While I've been working (quite successfully) with mod_python for a while now,
there are still some behaviors that surprise me, because I don't really
understand what Apache's doing under the hood.  The Shambala API notes are
somewhat helpful, but really nothing more than notes -- they see out of date
and leave many of the details unspecified.

So short of reading all of the Apache main and core source (I've read a bit
of it already), does anyone have any pointers to good docs for these sorts of
things?

Thanks!

Dustin

-- 

  Dustin Mitchell
  dustin at ywlcs.org
  http://people.cs.uchicago.edu/~dustin/