anchor.diff:  
   ----
   
  -You can also access the “real spatial but since its part of the scenegraph you will have to modify it on that thread:
  +You can also access the "`real`" spatial but since its part of the scenegraph you will have to modify it on that thread:
   
   [source,java]
   ----
  
positive.code: [source,java]
  ----
  
  Lookup.getDefault().lookup(SceneUndoRedoManager.class).addEdit(this, new AbstractUndoableSceneEdit() { 
  
  @Override 
  public void sceneUndo() { 
      //undo stuff in scene here
  } 
  
  @Override 
  public void sceneRedo() { 
      //redo stuff in scene here
  } 
  
  @Override 
  public void awtUndo() { 
      //undo stuff on awt thread here (updating of visual nodes etc, called post scene edit)
  } 
  
  @Override 
  public void awtRedo() { 
      //redo stuff on awt thread here
  } 
  });
  
  ----
  
negative.code: [source,java]
  ----
  
  @Override
  public UndoRedo getUndoRedo() {
  return Lookup.getDefault().lookup(SceneUndoRedoManager.class);
  }
  
  ----
  
  