MMaskScrollCookie X1.w,Y1.w,Width.w,Height.w,X2.w,Y2.w[,SourceShapeNum.w] ; Copy cookie to cookie & cookie-cut

Does the same as MMaskScroll but with regards to the cookie of chunky Shape
objects. Source and destination are chunky Shape object's cookie. The source
Shape's cookie will be mask-blitted onto the destination Shape's cookie.