Actually French law has specific provisions for media companies. Like if there is a defamation, generally one of the sanction is a message taking the same size and spot as the defamation. In other cases, the sanction if to buy some ad space in the press to put the specific sanction message (for example, after defrauding the shareholders in a publicly traded company). In local nasty cases of defamation, it can just be a message in a local newspapers (like a shop defaming another through a sign or a nasty political fight).

edit: to really answer, there is what we call "individualization of the sanction", where the court decide what would make sense as a sanction inside a palette (and to answer by advance: if a court decides something, yes it's appealable).