Force Density (Using the Mesh Vertex Repel command)
This definition calls on the ggForceDensity Relax functionality to compute a minimal surface discovered by Costa. This command doesn't compute minimal surfaces for all mesh, but at least seems to give a reasonable impression for Costa Minimal Surface.
Note, that unless you have a quick computer (or a lot of patience), it's probably worth disconnecting at the Mesh component (or disabling) and previewing the surface if you wish to adjust the sliders for variations.
Arc Poly Curve Extrusion boundary Minimal Surface
There is also capability to restrain mesh vertex to nominated points, curves and surfaces. Some examples demonstrating this will be posted soon.