selective rendering is one of my favorite features in bryce especialy after I've spent hours rendering the whole scene only to find out one small item is out of place. render the section save the image and cut and paste the section into the original scene in PaintShopPro if you render the images the same size you don't even have to reposition your selection. I've saved tons of rendering time with that feature. seems like common sense and probably everyone is doing it, but boy did I hit my head when I figured out that one. 13cents, 14cents, 15cents....