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Click the Save button to save the new currency or the Save and close button to save the currency and close the form.

Available links

Also, the toolbar includes the following hyperlinks:

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Click the Exchange Rates link to view the historic and current exchange rates for the currency. Exchange rates are specified with respect to the currency selected as the national currency in your system. For details on the role of the national currency, refer to Settings: Money form.

The Currency Exchange Rates list 

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 For details on setting up a new exchange rate, refer to Adding an Exchange Rate.