This node represents the handle through which you can select the cluster in the scene and manipulate its transformations. This node also stores the transformation information for the cluster's deformation.
Displays where (X,Y,Z co-ordinates) the “C” icon appears in the deformed object’s local space.
This attribute is connected to the weighted node (the one to which the cluster percentages are applied), if one was specified. Otherwise, the transform node above this node is the one to which the percentages are applied.