-=item C<get_default_currency>
-
-Returns the default currency or undef if no currency has been
-configured.
-
-=item C<get_accounting_method>
-
-Returns the default accounting method, accrual or cash
-
-=item C<get_inventory_system>
-
-Returns the default inventory system, perpetual or periodic
-
-=item C<get_profit_determination>
-
-Returns the default profit determination method, balance or income
-