<para>
Something in the scene that is being controlled by an Sandbox.MovieMaker.ITrack.
This could be a Sandbox.GameObject or Sandbox.Component reference, or a property contained
within another Sandbox.MovieMaker.ITrackTarget.
</para><para>
These targets are created using Sandbox.MovieMaker.TrackBinder.Get(Sandbox.MovieMaker.ITrack).
</para><para>
If Sandbox.MovieMaker.ITrackTarget.IsBound is true, this target is connected to a live instance of something in the scene,
so accessing it will affect that connected instance.
</para>