Question juridique clé
Whether the earlier Federal Supreme Court judgment was incomplete and had to be clarified under Art. 129 BGG.
Solution extraite
Yes. The dispositive was incomplete because it omitted the remand for a new ruling on the cantonal costs and party compensation.
Motifs extraits
The reasons of the earlier judgment clearly showed that the cantonal costs had to be reallocated by the lower court; the omission of the remand in the dispositive was an inadvertent drafting error that could be corrected without changing the substance of the decision.