Used to specify the intended country of operation of the accounts, and the currencies used.
Localisation Used to set the tax names and other details for the file (e.g. UK localisation will have a VAT tax; Australian will have GST).
Use custom base currency format If set allows you to specify a different currency symbol for your base currency other than that given by your system settings.
Use multiple currencies For Gold only, used to set up multiple currencies. See multi-currency for further details.