Returning rows having column values masked is disclosed. A sleeve mounted on the body is movable between first and second positions to close or open the port. At least some of the rollers are guided along a path around the perimeter of the work piece, such that a pressure exerted by the rollers on the work piece increases from a minimum value to a maximum value along a first half of the path and decreases from the maximum value to approximately the minimum value along a second half of the path. The pad is created by heating and compressing a fibrous textile batt so that it has a density of greater than 13 pounds per cubic foot. An apparatus may include a touch pad with x and y orthogonal dimensions and at least one edge in each dimension, an overlay above the touch pad and with the touch pad forming a contour, and a plastic-film cover, above and adhering to the overlay, fitting the contour of the touch pad and overlay and covering two edges of the touch pad in each of the x and y dimensions. The methods include the complexation of cyclodextrin with carotenoids and incorporation of the complexes into the nutritional supplements without intermediate collection, isolation, and drying steps.