If the Spline Effector is primarily concerned with arranging objects on a spline, a spline in a Spline Field Layer is used to spatially define effects. This can be, for example, a tube around the spline, the spline projected onto a specific axis as a volume or a growing effect along the course of the spline.

Splines can be either:

• can be selected when calling up the spline object in the view or in the Object Manager.
• or dragged and dropped directly into the field list.

The spline names are transferred to the field list. You will then not find the spline object under this name in the field list!