The button or the “View -> View 3D” menu shows interpolated values on all cells as a bottom plane and top curved surface.

The “Image ->Rotate” dialog rotates the view. Specify rotation values from -180 to 180 in the boxes provided.

The “Image->Format” dialog can remove the bottom or top surface, hide the dark sides, and change the color of a covering grid.

“Elevation” shows the distance from the surface to bottom plane. Distance is relative to maximal side of bottom plane.