3 judges. To prevent the appearance of any bias in the court's makeup, if there was a judge belonging to one member state on the panel and the other member state was not "represented", they had the ability to select an ad hoc judge of their own nationality to hear the case. In a full court hearing, that increased the number to 12; in one of the 5-man chambers, the new judge took the place of one of the original 5. That did not apply to summary procedure cases. The ad hoc judge, selected by the member state, was expected to fulfil all the requirements of a normal judge; the President of the Court had ultimate discretion over whether to authorise him to sit. The Court was mandated to open on 15 June each year and continue until all cases were finished, with extraordinary sessions if required; by 1927, there were more extraordinary sessions than ordinary ones. The Court's business being conducted in English and French as official languages, and hearings were public unless it was otherwise specified. After receiving files in a case calculated to lead to a judgment, the judges would exchange their views informally on the salient legal points of the case, and a time limit for producing a judgment would then be set. Then, each judge would write an anonymous summary containing his opinion; the opinions would be circulated among the Court for 2 or 3 days before the President drafted a judgment containing a summary of those submitted by individual judges. The Court would then agree on the decision that they wished to reach, along with the main points of argument they wished to use. Once this was done, a Committee of 4, including the President, the Registrar and two judges elected by secret ballot, drafted a final judgment, which was then voted on by the entire Court. Once a final judgment was set, it was given to the public and the press. Every judgment contained the reasons behind the decision and the judges assenting; dissenting judges were allowed to deliver their own judgment, with all judgments read in open court before the agents of the parties to the dispute. Judgments could not be revised except on the discovery of some fact unknown when the Court sat but not if the fact was known but not discussed because of negligence. The Court also issued "advisory