6 - adds to surface files. (but does not intersect or anything)
9 - Boolean operations (add, or, xor) on closed surfaces. Probably not working.
12 - checks surface for incorrect topology. Checks normals of neighbouring faces.
15 - Stan Melax coarsening algorithm
18 - Converts surfaces to/from various formats
21 - Finds nearest vertex and face to given point.
23 surfaceMeshTriangulate
24 - Triangulate external faces of mesh and write as surface.
27 - Explicit point merge of surface.
30 - Orient normals on (closed) surface.
33 - Laplacian smoothing on surface vertices
39 - Applies region information of surfaces to mesh.
40 Each external face of mesh gets region number of nearest surface triangle.
42 -------------------------------------------------------------------------------
45 - Similar to surfaceConvert, but uses surfMesh library