Special Drawing Rights (SDR), also known as "paper gold", is a special means of international payment, which was created by the International Monetary Fund (IMF) in 1969 when the IMF revised the first agreement. Its ISO 42 17 code is "XDR". It is allocated according to each country's share in the International Monetary Fund, and member countries can use it to balance the balance of payments. This is the right to use the funds allocated by the International Monetary Fund to member countries. When a member country has a balance of payments deficit, it can be used to exchange foreign exchange from other member countries designated by the IMF to pay the balance of payments deficit or repay IMF loans, or it can be used as an international reserve like gold and freely convertible currencies. However, because it is only a unit of account, not a real currency, it must be converted into other currencies before use and cannot be directly used for trade or non-trade payment. The fixed value of SDR is linked to a "basket" of currencies, and its market value is not fixed.

(The above is defined by Wikipedia)

Therefore, the right of drawing refers to the right of drawing.

If you want more information, I found some Chinese and English explanation websites for you.

English: /view/9782.htm

/terms/s/sdr.asp or/ebchecked/topic/171150/drawing-rights.