I have just tried last beta and discovered some new stuff... Nice progress... I have some notes...

RotateImage :: The circles, which represent planes for rotating an image, could be dashed like construction lines. There could also be a way of reseting the image into the basic state (i.e. circles are parallel/perpendicular to cplanes).

Blend :: When I make a blend (G1, G2) between two curves then join this three curves into one and extrude it (or use it as a path or profile for sweeping), the result is polysurface rather then smoothly deformable surface. Is it useful? (Yes, I can use AddPt and Delete commands for removing a kink from curve before extruding...)

Petr