Whether the appeal against the first-instance allocation of costs was admissible after the main action became moot and was struck from the roll.
The appeal was admissible under the cantonal procedural rules because the underlying judgment could have been challenged by reform and the dispute concerned only costs after mootness.
Art. 94 CPC allows review of costs in a case that became moot; the prerequisite is met where the merits decision would have been appealable by a remedy other than nullity.