The orders of the Federal Court which are now challenged by the appellant are those requiring the appellant to "provide security in the sum of $3,000,000". Those orders fall in a different category to any interlocutory order for the preservation of assets which has previously been made, at least in a reported case in this country. The basis of the initial order made by Sheppard J. was plainly adequate to warrant the grant of some relief in the nature of a Mareva injunction. That basis was that it appeared to his Honour that the present appellant, who was a respondent in the proceedings before him, remained in possession of assets representing the whole or most of an identified amount of $4,300,000 and that he was likely to dispose of those assets pursuant to an overall scheme to defeat any judgment which the present respondent, who was the applicant in those proceedings, might obtain against him. If the order had been restricted to injunctive relief preventing the appellant from disposing of so much of that $4,300,000 (or the assets representing that money) as remained in his possession, it would have clearly been within the powers of the Federal Court under s. 23 of the Act. However, the order which his Honour made differed in nature from the mere grant of such restricted injunctive relief. In terms, it provided that the present appellant "provide security in the sum of $3,000,000 in such manner and form as the parties may agree or, in default of agreement, the Court or its Registrar may approve". In the absence of agreement between the parties, it was subsequently ordered by Burchett J. that the "manner and form of providing the security ordered" be the payment of $3,000,000 (in cash or by bank cheque or partly in cash and partly by bank cheque) "to any Registrar" of the Federal Court or the "[p]rovision of security in the sum of $3,000,000 in such other manner and form as the Court or its Registrar" may approve. Beyond specifying that the $3,000,000 should be paid or provided by way of "security", the orders did not identify what, if anything, the money was to secure or what was subsequently to happen to it. Nor did they restrict the obligation of the appellant to pay the money by way of "security" by reference to the extent of the appellant's assets. The combined effect of the mandatory orders was to impose an unqualified requirement that, in the absence of approval of some "other manner and form", the appellant provide security by payment of the designated sum to a Registrar of the Federal Court.