You can create interesting 3D path effects by attaching a look-at connection between the path and another object in your scene. The attached object on the path then rotates to face the look-at object, no matter where it is positioned. You attach a look-at connection in the schematic between the 3D Path node and any object with axis characteristics (Axis, Camera, Light, Projector, Particle Animator, and DVE Object).
To apply a look-at connection:
The selected object is connected to the 3D Path node by an orange dotted line with an arrow.
(a) Look-at connection