Before revision:  After describing the interactions of various autonomous currencies, we argue that fixed exchanged rates can never be maintained , and we discuss the controversial role of the IMF in international financial relations. We finally use graph representations to give our interpretation on open problems, such as the monetary aggregates, the sectoral financial balances and the endogenous nature of money. Indeed, once appropriately consolidated, graphs of financial relations allow to formulate easily unambiguous statements about the monetary arrangements .
After revision:  After describing the interactions of various autonomous currencies, we argue that fixed exchanged rates can never be maintained .