Hi gustavo, the other reason why there isn't a "backface" type display in MoI is that for a long time I assumed that could be done in a polygon modeling program, since every polygon modeling program seems to have a flip function in it.

Unfortunately many of them seem to be broken when flipping meshes with vertex normal data attached to them. Is that still a problem in Modo now?

Could you ask them to fix that up? It's a pretty simple thing - if you flip a mesh that has vertex normals, it should flip the vertex normals as well.

- Michael