NEW in 3ds Max 9: The Scale_Layer Controller is created and used by the Animation Layer system to manage layers of Scale controllers.
Class instances not creatable by MAXScript
.average (Average_Weights) : boolean
Get/Set whether to average the layers' weights.
.exposedX (X) : float
Get/Set the exposed X value.
.exposedY (Y) : float
Get/Set the exposed Y value.
.exposedZ (Z) : float
Get/Set the exposed Z value.
See Layer Controller Interfaces for Properties and Methods