MScrollCookieToStencil X1.w,Y1.w,Width.w,Height.w,X2.w,Y2.w[,SourceShapeNum.w[,CustomOffsets.l]] ; cookie2sten

Does the same as MScroll except that the source of the operation will be the
cookie of a chunky Shape, which will be copied to the stencil of a chunky Bitmap.