Just a word to remind that this code is very usefull for the intergration of two external renderers, Povray : http://www.zoo-logique.org/3D.Blender/index.php3?zoo=com (the blend2pov build) and Kerkythea : http://cobalt3d.free.fr/images_3dblender/kerkythea/documentation/index_en.htm jms