The description of the currency.
The character used for the currency, for example? for the Euro.
The rate against the default currency defined in the system. The default currency always has a rate of 1.00. Suppose the default currency is EUR, and you want to add, for example, a USD (United States Dollar) as the currency, then you must keep the exchange rate of USD against the EUR. In other words: How many USDs can you buy with 1 Euro? That outcome is the value of the rate.
With this field you indicate whether the currency is the default within RentMagic.