Even from Symantec employees, I've not seen a very in depth technical doc or briefing on how it works, short of an overview... More conceptual if anything.
It's very frustrating actually. There are a number of configuration items that have no explanation associated with them. For instance, stream chunk size. It's set to 64k, with options to go all the way down to 1k, but there is ZERO documentation on what the impact of changing the setting will be.