I'm really confused about the "standard measurements for Bryce." I know there most be some kind of measurement Bryce uses, but what is it. I was thinking I might be safe to do 1 foot=1 unit, as the trees average about thirty units tall, but then you have huge screws and such. But then there's fog. It fades in the distance, but what distance measurement is that using? If you go for unit=inch, then anything more than a few feet away will fade into oblivion. So what's to do? What do the people who make the "free Bryce stuff" consider to be the "average" measurement?...