These are the control objects used together with the Fur Flow asset.
Fur Flow is an asset for quick and easy styling of fur. It allows the artist to go back and forth between combing and using the control nulls in a non-destructive way.
All control nulls can be duplicated indefinitely, so that you can easily achieve the result you want. By positioning each control null and adjusting its weight and scale, you can intuitively and precisely control the flow of the fur.