Questão jurídica principal
Whether the appeal could challenge only the refusal to revise the cantonal tax decisions under cantonal procedural law.
Decisão extraída
The federal appeal could address only the cantonal procedural-law issue concerning revision; the appellant failed to show arbitrary application of that law.
Fundamentação extraída
For pre-harmonization tax period 2000, LHID art. 51 did not apply, so revision depended solely on cantonal procedure. A complaint about cantonal law requires a properly reasoned arbitrariness claim under Art. 9 Cst.; this was not done.