keith said:

I agree with BB, but we have different ways about doing it.

well, to put it in a way that is just a bit more accurate... i have actually developed a system for doing it, and coded tools that prove both the viability and the efficiency of that system... and you've written some posts where you waved your hands around... so, yes, in a sense, we do have "different ways" of "doing it"... ;+) -bowerbird