Talli,
I'm not sure I understand your question. There is the documentation linked to above, and there is the code, which I assume matches that from some version of ACS 3.4. If those aren't sufficient to answer your questions, and I freely acknowledge that that documentation is pretty fast and hard, you can ask them here and I will answer them. But, that's pretty much all the documentation you'll find until someone writes more (which as I said, won't be me any time soon.)
