You can render different parts of a graphic by posing the characters or props separately (or making them invisible) and then bringing the various layers into Photoshop or Paint Shop Pro. By saving as *.tff or other format that allows for an alpha channel, you can delete the background and have the various elements in layers for special effects. Maybe that's what is meant. I think if you do a forum search, you'll find more information on this topic...seems to me that this question was asked relatively recently and someone had a better explanation than mine. Anyway, I did one of my graphics that way because I could only do the foreground and background in Poser 5, but I wanted to take advantage of the better lighting effect available for the mid layer where my characters were...was pretty easy to do (I use Paint Shop Pro).