Question juridique clé
Whether the court violated cantonal procedure by ordering an expert opinion ex officio on the handwritten nature of the testamentary addendum.
Solution extraite
The ex officio expert opinion was permissible; the cantonal rule allowed such evidence to clarify the parties' alleged facts and did not breach the Constitution.
Motifs extraits
The court held that § 202(2) ZPO/AG authorizes the judge to appoint an expert without a party request, limiting strict party control in favor of material truth and not conflicting with the federal constitution.