anchor.diff:                Xtension = Xtension.safe }
           let quadTree = QuadTree.make Constants.Engine.EntityTreeDepth Constants.Engine.EntityTreeBounds
           { screenState with EntityTreeNp = MutantCache.make Operators.id quadTree }
  -    
  -    /// Type tag.
  -    interface SimulantState
   
   /// Hosts the ongoing state of a group. The end-user of this engine should never touch this
   /// type, and it's public _only_ to make [<CLIMutable>] work.
  
positive.code:           CreationTimeStampNp = Core.getTimeStamp ()
            DispatcherNp = dispatcher
            Xtension = Xtension.safe }
  
      /// Type tag.
      interface SimulantState
  
  /// Hosts the ongoing state of an entity. The end-user of this engine should never touch this
  /// type, and it's public _only_ to make [<CLIMutable>] work.
  
negative.code:           CreationTimeStampNp = Core.getTimeStamp ()
            DispatcherNp = dispatcher
            Xtension = Xtension.safe }
  
  /// Hosts the ongoing state of a screen. The end-user of this engine should never touch this
  /// type, and it's public _only_ to make [<CLIMutable>] work.
  