The present invention provides a step in which a channel-length of a TFT can be controlled with higher reproducibility. Through use of the metadata, a user’s experience with the content can be enhanced. The system allows a user to \u201cteach\u201d a device to the system by interacting with virtual keys on an image of the hand held device and thus calculates the actual position on the hand held device by way of mathematical algorithms, taking into account any camera distortion at different heights and angles. Furthermore, the invention relates to the use of HCV E1 protein and peptides for prognosing and monitoring the clinical effectiveness andor clinical outcome of HCV treatment. Plated-through hole defects in the printed circuit board are identified by detecting a color formation at a surface location of the printed circuit board that corresponds to the plated-through hole defect. The branch identification logic is coupled to the branch prediction logic and the fetch logic.