§ 391. Final orders conclusive; to be entered and docketed as a judgment. No final order or judgment of registration shall be made, unless the court is satisfied that the title to be registered accordingly is free from reasonable doubt. The final order entered upon an application for registration is deemed to be a final judgment and may be entered and docketed and enforced as a final judgment in an action. Before the final order can be docketed, an enrollment must be filed thereupon as the judgment roll in an action, as provided in section three hundred and ninety-three of this chapter. The judgment and any order made and entered in a proceeding under this act shall, except as herein otherwise provided, be forever binding and conclusive upon the state of New York and all persons in the world, whether mentioned and served with the said notice specifically by name, or included in the description, "all other persons, if any, having any right or interest in, or liens upon, the property affected by this proceeding, or any part thereof." It shall not be an exception to such conclusiveness that any such person is an infant, mentally ill or is under any other disability or is not yet in being.