2008

The use of referenced objects and scenes allows several people to work
collaboratively on the same objects as the work progresses, without having to
wait for the objects to be finalized. You can choose to have the objects update
automatically, as soon as changes are saved to the original file, or to update
manually, on demand.
There are also tools for easy conversion of scene objects into referenced objects,
and a button to merge referenced objects into the scene as normal objects.
Objects in a scene can be externally referenced, created and maintained by other users.
External References (XRefs) | 6731