Key legal question
Whether the cantonal court's refusal to order evidence supplementation was immediately challengeable by constitutional complaint under Art. 87 OG.
Extracted holding
The complaint was inadmissible because an evidence order does not cause irreparable legal harm; the objection can be raised with the final judgment.
Extracted reasoning
Only irreparable legal detriment makes a separately notified interlocutory decision appealable. Evidence orders generally do not create such harm, and the alleged prejudice was at most factual, including possible delay. The defendant could renew his requests at the first-instance main hearing.