Function subd_mug 

pub fn subd_mug() -> Program

A mug, shaped as a subdivision surface with the box modelling tools: half an eight-sided cylinder mirrored in y = 0, cut into five rows, its handle two side faces extruded out and bridged, its inside the top inset and extruded down to a floor; the bottom’s rim creased sharp to stand on, the lip creased soft to round off. The body is subd(mug).