GIBBS C.J., MASON, WILSON, BRENNAN, DEANE AND DAWSON JJ.: Before the Court is an application for an interlocutory injunction directed to Sir George Lush, Sir Richard Blackburn and the Honourable Andrew Wells, three retired judges who have been appointed pursuant to the Parliamentary Commission of Inquiry Act 1986 (Cth) ("the Act"), as a parliamentary commission of inquiry to inquire and advise the Parliament whether any conduct of the plaintiff, Mr Justice Murphy, a member of this Court, has been such as to amount in its opinion to proved misbehaviour within the meaning of s.72 of the Constitution. Ordinarily an application for an interlocutory injunction would be heard by a single justice but because of the gravity and importance of the matter it was deemed proper to constitute a Court of six justices to hear it. The constitution of the Court in this way does not mean that it was appropriate at this stage to advance full argument as though this were the occasion for the final determination of the issues raised by the case, with the result that other cases would have been displaced from the list and other parties disadvantaged. There was no reason why the Court should, in this case, depart from the ordinary procedure when an interlocutory injunction is sought, and that means that except in relation to one of the arguments advanced on behalf of the plaintiff, it will be sufficient to inquire whether there is a triable issue and, if so, whether the balance of convenience favours the grant of an injunction.