Order totals are those modules which affect the total price of the order. You can find the list of order totals at Admin | Extensions | Order Totals. Some of them are:
Coupon: This option allows the customer to apply the coupon discount
Store Credit: If you have store credit, it automatically decreases the total purchase cost with the available credit
Handling Fee: This option provides an additional fee for handling the product
Low Order Fee: This option provides extra cost if the customer orders the minimum specified quantity
Reward Points: Points are accumulated which can be used to buy reward points products
Sub-Total: This option shows the subtotal separately
Taxes: This option shows taxes separately
Total: This option shows the total amount to be billed
Gift Voucher: This option is used to gift credit to purchase the products
When they are applied, there is a change in the Total value, so they are placed on the Order Totals
module. You will be able to see the Order...