Volume
Tip:Note also the Polygon Field Layer. You can drag Volumes directly into a Field list where it will be placed as a Point Object Layer and will offer even more possibilities than the Volume Effector.
At left the volume object, at right the effect of the Volume Effector (in this example: Rotation and Scaling of the Clone within the range of influence).
This Effector defines its range of influence based on spatial polygonal objects. All Clones that lie within a given object's volume will be influenced by this Effector. Make sure the volume used is a closed volume. Otherwise unexpected or unwanted results may occur.