engine = new CompatibilityEngine();
vizEventManager = new StandardVizEventManager();
scheduler = new CompatibilityScheduler();
modelClassLibrary = new ModelClassLibrary();
limits = new GraphLimits();
dataBridge = new DataBridge();
textManager = new TextManager();
screenshotMaker = new ScreenshotMaker();
currentModel = new VizModel(true);
selectionManager = new SelectionManager();