"In dozens of deals across the Continent, banks provided cash upfront in return for government payments in the future, with those liabilities then left off the books. Greece, for example, traded away the rights to airport fees and lottery proceeds in years to come.
Critics say that such deals, because they are not recorded as loans, mislead investors and regulators about the depth of a country’s liabilities.
Some of the Greek deals were named after figures in Greek mythology. One of them, for instance, was called Aeolos, after the god of the winds."