A 3D sketch is containing just a 3D spline, defined as intersection of 2 surfaces.
If I change one of the surface, the 3D spline is lost, and i am then full of 3D spleen.
Is there a way to make me more happy with this wonderful SW program : the 3D spline goes on to be the intersection of 2 surfaces, even if I modify one of them ?
Btw, one more proof given with this delicious problem that guys who were behind the screen to write this wonderful program could improve their math : I am searching the intersection surface in the curve menu (one 1D sub manifold can be the intersection of 2 2D-manifolds) , and of course, I don't find it there, but hiden in the Tools-> sketch tool !!!!