Question juridique clé
Whether the appeal against the cost-advance order was admissible as a challenge to a separately notified interim decision.
Solution extraite
Yes. The order was an independently appealable interim decision because failure to pay could lead to non-entry and thus cause irreparable prejudice.
Motifs extraits
Under Art. 93 BGG, a cost-advance order is appealable if non-payment may result in dismissal of the underlying appeal, creating a non-remediable disadvantage.