RegisterStorableClass(TStaticThing);
   RegisterStorableClass(TFeature);
   RegisterStorableClass(TScenery);
   RegisterStorableClass(TOpening);
   RegisterStorableClass(TSurface);
   RegisterStorableClass(TEarthGround);
   RegisterStorableClass(TContainer);
   RegisterStorableClass(TSpade);
   RegisterStorableClass(TSign);
   RegisterStorableClass(TTree);
   RegisterStorableClass(TBag);
   RegisterStorableClass(THole);
   RegisterStorableClass(TPile);
   RegisterStorableClass(TEarthPile);