Question juridique clé
Whether the presidential interim order on the language of proceedings was separately appealable by administrative judicial complaint.
Solution extraite
The complaint was not admissible because the appellant did not show an irreparable disadvantage from conducting the proceedings in French.
Motifs extraits
The order was an interim decision. Separate review required a possible irreparable disadvantage, and the appellant failed to explain any harm that could not be remedied in later review. Mere additional effort or preference for a German-language decision was insufficient.