+ 'key' => 'credit-card-surcharge-percentage',
+ 'section' => 'billing',
+ 'description' => 'Add a credit card surcharge to invoices, as a % of the invoice total. WARNING: this is usually prohibited by merchant account / other agreements and/or law, but is currently lawful in AU and UK.',
+ 'type' => 'text',
+ },
+
+ {