You take a right turn a bit fast and get some tire squeal a) mostly from the left b) mostly from the right c) about equally from all four. --rwg PS, Adobe reader is *still* trying to write that little 78.8MB .nb. I think Mma is telling me I'm being an idiot. Instead of stupid pdfs and gif vines, I should be writing, e.g., http://gosper.org/trilbertloopsedgescorners.cdf and whoever wants to actually manipulate the graphics can download http://www.wolfram.com/cdf-player/ . Only I worry that this cdf, instead of being 300 times larger than its notebook, is 7 times smaller. When I try to view it by downloading my own cdf player, I'm told that I already have the latest version--Mathematica 9.0.1. So perhaps a few of you w/o Mathematica who feel like downloading Wolfram's player can tell me if the three Graphics3Ds are mouse tumblable. They are in my "cdf previewer", but the doc says all interactivity must use Manipulate. --rwg