Trying to make friends with the vertex modeler after many years of spline modeling.  I'm a little confused by this one... I insert a 3d cube in the vertex modeler and applying smoothing to it.  Nothing happens.  the corners and edges remain sharp.  I compare this to Hexagon where if you smooth a cube, it rounds all the corners and edges.   Is it not possible to smooth a cube in Carrara's vertex modeler, or what am I missing?

Chuck