Entering Payments (2)
Amount Owing (Amt. Owing). The amount left to pay on an invoice or the amount of a prepayment that you can apply to an invoice.
Discount Available (Disc. Available). The amount you will save, according to your payment terms, by paying the invoice before the discount expires. This field is calculated automatically, based on the payment terms of the original invoice.
Discount Taken (Disc. Taken). The discount already applied to the invoice.
Payment Amount (Payment Amt.). The amount that you are paying or the amount of the prepayment that you are applying.
You can pay the entire invoice or just a part.
Include Fully Paid Invoices/ Prepayments
Click the Include Fully Paid Invoices/Prepayments button if you need to list fully paid invoices, so you can reverse all or part of a fully paid invoice (to correct an error or to account for an NSF cheque).
If you select Pay Credit Card Bill
If you select Pay Credit Card Bill, the following field appears:
Payment Amount. The amount that you are paying to the credit-card company.
If you select Make Other Payment
If you select Make Other Payment, the following fields appear:
Account (Acct.). The account this payment will debit or credit.
Description. A description of an item that you are paying.
Amount. The amount you are paying.
The remaining fields are the same as described in the section “Entering Purchases,” earlier in the Workbook.
Taken From : Simply Accounting

[...] The Romans were great inventors and practitioners of mnemonic techniques, one of their most popular being the Roman Room. The Romans constructed such a system easily. They imagined the entrance to their house and their room and then filled the room with as many objects and items of furniture as they chose — each object and piece of furniture serving as a link-image onto which they attached the things they wished to remember. The Romans were particularly careful not to make a mental rubbish dump of their room; precision and order (attributes of the left side of your brain) are essential in this system. A Roman might, for example, have constructed his imaginary entrance and room with two gigantic pillars at either side of the front door, a carved lion’s head as his doorknob, and an exquisite Greek statue on the immediate left as he walked in. Next to the statue might have been a flowering plant; next to the plant, a large sofa covered with the fur of one of the animals the Roman had hunted; and, in front of the sofa, a large marble table on which were placed goblets, a wine container, bowls of fruit, and so forth. [...]