When I create a control point spline in ZW3D I can define the degree for the spline.
However, none of the usual tools, for example the Curve Mesh or the loft tool create a surface allow me to define the degree of the surface. One would assume that if we create a Curve mesh with 4 boundary curves, all 5-degree CV splines, that the resulting surface is also a 5-degree surface, but that is not the case.
By default ZW3D (still on 2020) creates 3-degree surfaces.