Hi, it's me again,
I tried to model some sort of a head. Since I used Softimage, I took a NURBS sphere, cut it in half with carve and voila, there's a slight crease 90 degrees from the cut. At the end I mirrored the Geometry and put it together with “join”. Now I have a crease running from pole to pole along the ear. How can I fix this, so I have a smooth sphere. In SI I would delete some Isolines but how does it work here?