Object Edit > Smooth

Improves the smoothness of surfaces and curves by harmonizing CV distances and simultaneously minimizing angles/kinks inside the hulls.

Procedures

Smooth curves and surfaces

Smooth Options

Smoothing Factor
Controls the effect of each smoothing step. The smaller the smoothing factor, the smaller the movements of the CVs.
Undo
Interpolates between the current result and the original input. A value of 1 shows the final result of all smoothing operations so far, 0 represents the original input. If Check Deviation is turned on, the deviation updates dynamically.
Smooth U/V
U and V check boxes let you smooth surfaces in the U and V directions independently.
Fixed Edges
Keeps the edges of the surface fixed so the edge CVs do not move during the smoothing operation.
Edge Influence
Adds additional control to the Fixed Edges option.

An edge influence of 0.0 results in the edges remaining unchanged and the interior surface being smoothed.

An edge influence of 1.0 gives results based only on the edges, producing a surface identical to using the square tool on the four edges of the original surface.

Values in between produce a blend of these two results.

Check Deviation
Displays and updates the maximum deviation between the input and smoothed object after each Smooth.
Proxy Display
Displays the original input.