Apple Motion 3 - Manual (Page 811)

Chapter 9 Using the Replicator 811
 Point Size: This parameter appears when Points is selected from the Show Objects
As pop-up menu. This allows you to increase the size of the points for easier
viewing. In the following image, the Point Size is set to 8.
 Lines: This parameter is effective only when the elements of the replicator are
animated using Simulation behaviors or the Throw (Basic Motion) behavior. The
movement of each pattern element is represented by a line and is useful in analyzing
the vector of each element’s motion. The length of each line is determined by that
element’s speed, and the angle of each line equals each element’s direction. In the
following image, the replicator elements are animated using the Vortex behavior.
Note: Element movement created by using the Sequence Replicator behavior or by
keyframing the replicator parameters is not displayed.