But UV mapping is not part of the picture in this case, as no Vue parametric material is UV map based, they are set to be applied with the Vue mapping modes. As for the SolidGrowth output, it surely produces "normal" 3D trees. The leaves are bitmaps UV mapped on planes (exactly like Xfrog), although the Vue maps appear to be subdivided in 4 and probably applied with some random assignment system to different planes on the tree. I can't be sure about the bark bitmaps mapping, possibly UV yes, possibly simple cylindrical mapping. The output polygons size of SolidGrowht trees is surely comparable with those of the tree programs such as Xfrog or Tree Professional. It remains the fact that there is something about the fuzziness parameter that can be succassfully applied to primitives and not to other meshes - at least as far as the clouds materials are concerned. This has no apparent logical explanation (to my mind at least). To find the reason why, further experimenting is necessary, unless some E-On's soul comes up with the reason. :-) That's surely an interesting field to experiment upon and I'll surely do when I have time.