// any specific rendering settings defaults that overwrite user settings should go here
//this.renderer.getRenderer2DModel().setShowEndCarbons(false);
//this.renderer.getRenderer2DModel().setShowAromaticity(false);
}
this.setFitToScreen(fitToScreen);
this.controllerModel = new ControllerModel();
UndoRedoHandler undoredohandler = new UndoRedoHandler();
undoredohandler.addIUndoListener(this);
// connect the Renderer to the Hub
this.hub = new ControllerHub(controllerModel, renderer, chemModel,