After the release of PoV-Ray 3.5, I was following some ray-tracing links, and found a familiar name here: http://www.ipfw.edu/math/Coffman/steinersurface.html There was a link to: http://www.tecgraf.puc-rio.br/~lhf/sib99/ So there is more than Lua in the life of our fellow Lua team... Fortunately! :-) Regards. -- --=#=--=#=--=#=--=#=--=#=--=#=--=#=--=#=--=#=-- Philippe Lhoste (Paris -- France) Professional programmer and amateur artist http://jove.prohosting.com/~philho/ --=#=--=#=--=#=--=#=--=#=--=#=--=#=--=#=--=#=-- GMX - Die Kommunikationsplattform im Internet. http://www.gmx.net