Gets and sets if the thread is physical or cosmetic thread. A value of true indicates a physical thread. It defaults to false.
 To set this property, you need to position the timeline marker to immediately before this feature. This can be accomplished using the following code: thisFeature.timelineObject.rollTo(True)
"threadFeature_var" is a variable referencing a ThreadFeature object. | 
        
"threadFeature_var" is a variable referencing a ThreadFeature object. |