In any action or suit instituted by process a defendant may, in the vacation of the court, and whether the action or suit be on the court docket or not, confess a judgment or decree in the clerk's office for so much principal and interest as the plaintiff may be willing to accept a judgment or decree for. The same shall be entered of record by the clerk in the order book, and be as final and as valid as if entered in court on the day of such confession, except merely that the court shall have such control over it as is given by section seventy of this article.