This is similar to what someone posted a while back about bending bodies, but the opposite. This command would be used to "unroll" bodies or surfaces with 3d curvature to what they would be as a flat shape as if they were laid out on a table. I posted screenshots below of an instance this would be used for. The black body is a piece of leather. As you can see it has 3d curvature, and if I were to make this, I would need to CNC the leather into this shape. There is no way for me to know the exact shape as a flat piece of leather though because it is currently curved. The unroll command would determine this for me.