Hi bigseb - Flow is a new command in the MoI v3 beta, you can download the beta here: http://moi3d.com/beta.htm
It's a tool for deforming an object, it maps an object from one backbone to a new target backbone, the start backbone can be a line or a base plane, and the target backbone can be some bendy curve or curved surface. It basically deforms an object to follow a curved path curve or cover a curved surface.
