Special Drawing Rights (SDR) are unconditional international reserve assets created by the Fund. Reserve Positions in the Fund are unconditional assets that arise from countries' gold subscriptions to the Fund, from the Fund's use of member currcies to finance drawings of others and from Fund Borrowings.

Foreign exchange is defined as holdings by monetary authorities (central banks, currency boards, exchange stabilization funds, and Treasuries to the extent that they perform similar functions) of claims on foreigners in the form of bank deposits.

Treasury bills, short and long-term government securities, and other claims usable in the event of a balance-of-payments deficit, including non-marketable claims arising from inter-central bank and intergovernmental arrangements without regard to whether the claim is denominated in the currency of the debtor or the creditor.