And I strongly urge people to think about this - why is the image so poorly commented? Because SqC took exactly this approach - "better to getthe stuff in, who cares, we can write comments later".
Err ... actually this is wrong. Really, we never intended to "write comments later". We were no vendor just a bunch of people willing to share their (unfinished) tools with the rest of the world. If you expect a fully documented system then find a vendor. That's what they do.
Cheers, - Andreas