Questão jurídica principal
Whether the appeal should be treated as an ordinary public-law appeal and is admissible
Decisão extraída
The filing, though labeled subsidiary constitutional complaint, is treated as a public-law appeal and is admissible in principle.
Fundamentação extraída
Succession-tax decisions are public-law matters not excluded by the LTF exceptions; the filing was timely, against a final cantonal decision, and brought by entitled persons.