Question juridique clé
Whether the nullity appeal could challenge the conviction under cantonal law and factual findings
Solution extraite
The appeal was inadmissible insofar as it attacked cantonal law, and factual findings could be corrected only for manifest inadvertence, which was not shown.
Motifs extraits
Nullity appeal is limited to federal law; the court is bound by facts unless there is a manifest inadvertence, not merely an evidentiary dispute.