Hi yannada,

> perhaps something like that?
> http://integrityware.com/tutorials/Max/Release20/FaceGrids/FaceGrids.html

Actually no - as far as I can tell that is making a kind of curve grid on a surface I guess for snapping on to?

That is a different type of thing than inserting or removing surface control points.

Surface control points are a kind of "hull" of points that define the surface, you can see them if you have a single surface (use Edit/Separate if you have a joined surface) and then use Edit/Show pts. You can then manipulate these points to edit the shape of a surface, it works in the same way that editing the control points of a curve changes the shape of a curve.

Surface control points are not normally used as a snapping target, but rather as a way reshape the surface by moving them.

- Michael