CVs are distributed in a CV network. The position of every CV plays a role in determining the shape of the surface. The relative position of every CV with respect to its neighboring CVs is an important factor in determining the evenness of the CV distribution. An evenly distributed CV network results in better surface smoothness.

When CVs are distinctly out-of-place with respect to their neighboring CVs, surface imperfections can occur.

The Smooth tool improves the smoothness of surfaces and curves by minimizing extreme incremental differences of CV positions in the network while retaining the distribution pattern.