2. The language of a case shall be chosen by the applicant, except that: Where the defendant is a Member State the language of the case shall be the official language of that State; where that State has more than one official language, the applicant may choose between them. 3. The language of the case shall in particular be used in the written and oral pleadings of the parties and in supporting documents, and also in the minutes and decisions of the Court. Any supporting documents expressed in another language must be accompanied by a translation into the language of the case. 4. In the case of lengthy documents, translations may be confined to extracts. However, the Court may, of its own motion or at the request of a party, at any time call for a complete or fuller translation. 5. Where a witness or expert states that he is unable adequately to express himself in one of the languages referred to in paragraph (1) of this Article, the Court may authorize him to give his evidence in another language. 6. The Court may in conducting oral proceedings, use one of the languages referred to in paragraph 1 of this Article other than the language of the case. Article 26 1. The Chief Registrar shall, at the request of any Judge, or of a party, arrange for anything said or written in the course of the proceedings before the Court to be translated into the languages in Article 25(1). 2. Publications of the Court shall be issued in the languages referred to in Article 25(1) of these Rules. Article 27 The texts of documents drawn up in the language of the Court or in any other language authorized by the Court pursuant to Article 25(1) of these Rules shall be authentic. CHAPTER VI RIGHTS AND OBLIGATIONS OF AGENTS, ADVISERS AND LAWYERS Article 28 1. Agents, advisers and lawyers appearing before the Court or before any judicial authority to which the Court has addressed letters rogatory, shall enjoy immunity in respect of words spoken or written by them concerning the case or the parties. 2. Agents, advisers and lawyers shall enjoy the following further privileges and Facilities: