Trapcode Particular
The Kaleidospace group adds 3D symmetry to a particle system.
Mirror Mode Checkboxes: Defines the symmetry axes.
Left to right, Mirror is Off, Mirror X, Mirror Y, Mirror Z with positon z 500 pixels back, and Mirror X and Y.
Behavior pop-up: Defines the symmetry operation.
Left to right, Behavior is set to Mirror and Remove, and Mirror Everything.
Center Position : Defines the symmetry center with XYZ coordinates. Coordinates take affect when the corresponding Mirror value is checked (ie: Z position will adjust when Mirror on Z is selected).