A coating comprising a urethane resin as a base, and at least polyurethane particles and fluororesin powder is formed on a surface of a member that is, or can be, contacted with an optical disk in an optical disk apparatus. In certain embodiments, the coating is provided with at least one layer of zirconium silicon oxynitride, for improving the coated article’s ability to block of UV radiation. The members may form the pedestal for supporting a seat which can be adjusted in height, angular position and tilt, and locked by the apparatus in a desired adjusted position which is particularly suitable for users with special needs. Otherwise, if malicious code activity is not detected, the specified system call is restarted. These techniques and apparatuses enable highlights of these graded images and video clips to be more-quickly created, at a high quality, or using fewer resources.