661. If bringing an appeal is likely to cause serious or irreparable prejudice to one of the parties, the judge may, on an application, order provisional execution, even for part only of the judgment. The judge may also make provisional execution conditional on a surety being furnished.
If provisional execution is not ordered by the judgment itself, it cannot be ordered subsequently except on appeal, with or without a surety. A judge of the Court of Appeal may also stay or lift provisional execution if it has been ordered, or order that a suretyship be provided by a party that was exempted from doing so by the court of first instance.