However, if any other key-in operation including an error comes inbetween, the item-corret will not function for the last line item any more. The [ITEM CORR] key may function to delete the last item entered through a positive department, PLU, [%+], [%-], [DOLL DISC], [R/A], [PO], or [TAX](Manual Tax) key. But a department or PLU item entered with the [RTN MDSE] key cannot be item-corrected. Neither can a negative department or PLU, an entry through any media key, [ST], any line item of- non-add number, or an item-correct entry itself be item-corrected. VALIDATION KEY ([VALIDATE]) This key is used to print a validation slip. To operate, after registering the required item, insert a slip into the validation slot and depress the [VALIDATE] key. The item and the amount will be printed on the slip. If the MSLP" lamp flickers, it means that validation compulsion is programmed for the last item entered. In this case, operate a validation print as described above. No other operations will be allowed until the compulsory validation is executed. Print or non-print of the date and/or the consecutive No. is a programmable option. Also programmable are single- or mutli-validation (number of times of validation print for the same item), validation compulsion on certain transaction keys, etc. PERCENT CHARGE KEY ([%+]) This key is used to add a percent rate to a sale. If the preset rate is to be added, depress the [%+] key without a prior numeric entry. If a rate different from the preset one is required, enter the desired rate on the numeric keyboard and then depress the [%+] key. The manual rate will take priority. To operate, depress the [%+] key either immediately after a department or PLU entry if only that item requires the percent addition, or after the [ST] key has been depressed if required on the total bill. The percent rate and the amount are printed and added to the sale total. - 12 - %- The percent rate may be within the range from 0.001 to 99.999%. The fraction resulted from the percent calculation is usually programmed to be rounded off. However, it can be programmed to be rounded up or discarded. Usually, [%+] key operations may be performed as many times as required after obtaining the subtotal. However, it can be programmed to prohibit more than once. PERCENT DISCOUNT KEY ([%-]) This key operates in the same fashion as the [%+] key except that operation will subtract from instead of adding to a sale- DOLL DOLLAR DISCOUNT KEY ([DOLL DISC]) DISC This key is used to subtract an amount from the sale total such as a discount during a sale. This key can not normally be used outside a sale. An amount exceeding the sale total can not normally be entered. However, when the "Credit Balance" option has been selected, this key can be used inside or outside the sale and over-subtraction of the sale is allowed. To operate, enter the discount amount on the mumeric keyboard, and then depress the [DOLL DISC] key. RECEIVED ON ACCOUNT KEY ([R/A]) A received-on-account transaction is used to identify money which in the drawer but not business. The amount entered is thus included in the In-drawer Total but not in the sales totals. To operate, enter an amount of payment and then depress the [R/A] key. Repeat this operation if multiple payments are entered at a time. The payments thus entered may be finalized by the [AT/TL] (for cash payments). The [CHK TND] and/or [Chg] key may also function to finalize payments received on account if not prohibited in program option. The above oepration can only be done when the register is outside a sale. The [ITEM CORR] key is effective to delete a payment just recorded with a depression of the [R/A] key, if before the transaction is finalized by a media key. This key will not function when the Mode Lock is in the Q position. - 13 - PO PAID OUT KEY ([PO]) A paid-out transaction is used when an amount of money is removed from the cash drawer without relating to a sale. When the [PO] key is used, the amount entered is subtracted from the Cash-in-drawer Total but does not affect the sales totals. To operate, enter an amount taken from the cash drawer and depress the [PO] key while the register is in an out-of-sale condition. This operation may be carried out as many times as required within a receipt if multiple paid-out items are registered in one transaction. The paid-out amounts recorded are finalized by the [AT/TL] key (i.e. for cash payments only). The [ITEM CORR] is effective to delete a payment just recorded with a depression of the [PO] key, if before the transaction is finalized by the [AT/TL] key. This key will not function when the Mode Lock is in the Q position. SUBTOTAL KEY ([ST]) This key is used to obtain the subtotal amount during a sale. When this key is depressed after all the items have been rung up, the subtotal of the sale is printed and displayed. The displayed amount content differs depending on a system option selection: 11 [ST] Key D...