• Normals describe which way the surface of the polygon faces to the rendering engine (used in lighting/shading computations). - Poser ignores any normals in the file and generates it's own (which is unfortunate, because it means that you can't supply corrective normals to fix seams, etc). - Many other apps need the normals. - Just deleting all the 'vn' lines is NOT a valid thing to do... those lines are also referenced by the 'f' (facet) lines... if you are going to delete the normals (correctly), you need to remove those references as well. While Poser may read files edited in this fashion, it's a good bet that a majority of the rest of 3D software in the world will barf trying to read these illeagally formatted files. If you insist on removing the normals, please use an export option in UVMapper or some other sftware. - Removing normals only appreciably reduces the uncompressed .obj file size... since .obj files are text, they compress very well, with or without normals, so it doesn't make that much difference in download (compressed) file size. - Removing normals makes zero difference in rendering speed... since Poser will have already re-computed it's own normals, whether or not they were included in the file. Just some food for thought ;).

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