Cello has paused while OpenGL kicks my butt over "picking", in which one has OpenGL determine what in a scene has been clicked (actually, more generally) what in a scene is where. But I have had this working before, so I just have to figure out which monkey broke that. The real pause comes from: Cells/Tk. I think this will be a nice quicky alternative to Cello, and certainly not require so many libraries. Meanwhile, on "Notes From All Over" front, this laugher from the book I bought last night for Maya, the killer 3D animation and modeling app: Maya's architecture can be explained [in] a single line: "nodes with attributes which are connected" Small world, eh? :) And yes, they speak of the "dependency graph". kenny -- Home? http://tilton-technology.com Cells? http://www.common-lisp.net/project/cells/ Cello? http://www.common-lisp.net/project/cello/ Why Lisp? http://alu.cliki.net/RtL%20Highlight%20Film Your Project Here! http://alu.cliki.net/Industry%20Application