If True, any writes to the driven field will be propagated back to the Reference provided by the ParentReference. See write backs.
DefaultReference
T
Default value to use if the component can not find a compatible ParentReference.
Usage
Upon a change of parent, this component will search for ParentReference components on the slot's immediate parent that have a matching type and tag. If it can find such a component and link to it, it will drive the Target field based on the Reference of the ParentReference. If it can not find such a component, it will use the DefaultReference value.