The misplacement of a servo burst during a servowriting or self-servowriting process can be corrected by erasing and re-writing that burst. The sample is placed in a sample chamber that is adjacent to an optical amplifier chamber, and the optical amplifier chamber is adjacent to one or more additional chambers. Also provided by the invention are tissue cultures of the soybean variety 01046529 and the plants regenerated therefrom. Further, methods and systems of switching prescription medical products to non-prescription, over-the-counter medical products are provided. It is difficult for unnecessary films to adhere to the thus treated surfaces and it is difficult for unnecessary films deposited on the thus treated surfaces to come off the surfaces.