SplineBasic Coord. Effector Parameter Deformer Falloff
The Spline Effector takes the clones and arranges them in turn on a spline. Clones and spline points are numbered internally. Simply put (i.e. without having changed any settings), the Spline Effector will arrange the first clone at the start of the spline and the last clone at the end of the spline. The positions of the clones that lie between the first and last clones will be interpolated based on various settings. This is all done by the Cloner Object as well. The trick is to get the various settings to make the clones move smoothly from their initial position (or scale, or angle) onto the spline. The clones can also be moved relative along the length of the spline or a copy of the spline will be assigned to each clone, along which the clones can move along (see below Transform Mode).