[6] The stage has now been reached where it is possible to consider the appeal now before us. As regards the plaintiff's application to set aside the order for security made on 27 May 1998, his Honour, in referring to it in his reasons delivered in December 1998, said that, except on an appeal against it, there was no power to set aside or vary that order. That was, in law, not altogether correct. The order in question was interlocutory in character, and interlocutory orders are, at least to some extent and in some circumstances, susceptible of variation either by the judge who made them or otherwise without necessity for an appeal. What is, however, generally required as a prerequisite to varying or setting aside such an order is new material providing evidence of additional relevant facts, which have arisen or been discovered since the earlier application or order was made, that require a different order from that originally made, or would have done so at the time when that order was made. See ex p Edwards [1989] 1 Qd R 139, 142. Without material of that kind, a further such application would, as Taylor J described it in Hall v Nominal Defendant [1966] HCA 36; (1966) 117 CLR 423, 440-441, ordinarily prove quite "fruitless".