| VRTrackedObject | 
| PoseSource | Which tracked object should we use to update the transform? | 
| TrackingType | Which parts of the transform should be updated? (eg. rotation, position) | 
| UseRelativeTransform | If this is checked, then the transform used will be relative to the VR anchor (rather than an absolute world position). | 
| OnPreRender | |
| OnUpdate |