Abstract: An axillary airfoil located as far forward as practicable on the fuselage of an airliner. During high speed cruise, the airfoil can be adjusted to provide supplemental lift to move the center of pressure forward, thereby reducing the amount of downforce needed to be produced by the vertical stabilizer. This would result in saving fuel. Spoilers mounted on the airfoils would be programmed to automatically deploy to return the center of pressure rearward whenever flight conditions require greater longitudinal stability.

Abstract: A payee (a vendor) creates bill 46 with account information 14 and activity 22 printed in alphanumeric characters and in a barcode symbol 42. Bill 46 is sent in the mail to a payer (a customer). The payer scans symbol 42 into a PC 52 (personal computer). Scanning wand 48 decodes symbol 42 and transmits it to PC 52. An editor 54 is installed on PC 52. Editor 54 interprets signals and displays interactive visual image 60 on a display terminal 62. The payer verifies that the information on image 60 is the same as on bill 46. The payer clicks the next button with a mouse 66 to show a transaction display 68 on terminal 62. The payer determines that he or she wishes to pay amount 73 and enters amount 73 on display 68. The payer instructs editor 54 to transfer a payment order 82 either to an electric banking software program 58 installed on PC 52 or to an online program 59 accessible through a modem 55 of PC 52.