[IAA 5] Interpretation of Part 25 

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(1) In the interpretation of this Act, reference shall be made to the Arbitration Model Law.
(2) Without affecting the generality of subsection (1), in making reference to the Arbitration Model Law, regard is to be had to the international origin of the Arbitration Model Law and to the need to promote uniformity in its application and the observance of good faith.
(3) Questions concerning matters governed by this Act which are not expressly settled in it are to be settled in conformity with the general principles on which the Arbitration Model Law is based.
(4) Where a provision of this Act, except section 46, leaves the parties free to determine a certain issue, such freedom includes the right of the parties to authorise a third party, including an institution, to make that determination.
(5) Where a provision of this Act refers to the fact that the parties have agreed or that they may agree or in any other way refers to an agreement of the parties, such agreement includes any arbitration rules referred to in that agreement.
(6) Where a provision of this Act, other than in sections 42(a) and 50(2)(a), refers to a claim, it also applies to a counterclaim, and where it refers to a defence, it also applies to a defence to such counterclaim.