As for the command “extrude”, jeff_hammond in his example of the hexagonal prism has described well what I meant (see the first image, last extrusion).
Instead, as regards the command “SolidPtOn” would like a feature of the genus described to this address: V6 wish: move, rotate and scale face with out changing the surroundings (see video added by me for the software UGS NX).
Thanks Pascal