+ 'key' => 'invoice-ship_address',
+ 'section' => 'billing',
+ 'description' => 'Enable this switch to include the ship address on the invoice.',
+ 'type' => 'checkbox',
+ },
+
+ {
+ 'key' => 'invoice-unitprice',
+ 'section' => 'billing',
+ 'description' => 'This switch enables unit pricing on the invoice.',
+ 'type' => 'checkbox',
+ },
+
+ {