Embodiments of the present invention include computer-implemented methods for selectively applying remedial actions, according to a predefined order, for reducing the error rate in a computer memory system. A buyer may associate pre-purchased downloadable content with a gift card such that the card is \u201cpreloaded\u201d for a recipient. The sling may comprise a coated material adapted for urethral suspension. The gas jetting port of the secondary nozzle portion is displaced in the direction opposite to the steel strip at least 5 mm apart from the gas jetting port of the primary nozzle portion, and the secondary nozzle portion jets the gas so that the flow rate of the secondary gas jet comes to 10 ms or more at the confluence with the primary gas jet from the primary nozzle portion. A visual speech activity detector is coupled to the region of interest extractor and measures changes in the region of interest to determine if a visual speech cue has been generated by the user. The special display controller also does not require a graphics card for each display.