A system and method for forming an article from thermoplastic material and fiber. The image adjustment may be made in response to activation of a simulated ink key, for example, by adjusting the pixel values of the stored data andor by adjusting imaging light source intensity within a given region of the image. The nozzle means is operatively associated with the inner wall of the body for directing pressurized fluid into the lumen to develop a pressure differential in an area within a region extending from a location adjacent a distal end portion of the lumen to a location adjacent a proximal end portion of the lumen, to form a fluid seal around an instrument passing therethrough. The magnets may be oriented with a helix angle between their primary axis and the axis of rotation of the pinion. Peaks in the series having a peak value less than a previous peak value in the series are ignored, thereby resulting in a set of unignored peaks. An avoidance unit comprising a metric computation unit and a decision unit generates a reliability metric based upon a received code block.