A retardation film comprised of a single oriented polymer film, characterized in that the retardation at wavelengths of 450 nm and 550 nm satisfies the following formulae andor, and the water absorption is no greater than 1%. A user can download from an upgrade website documentation describing the differences in operation between a post-upgrade version of the application that would result if a target upgrade is implemented and a pre-upgrade version of the application, e. A separation layer is formed along the bottom of the recesses. The high-speed IO trace can sustain a data flow rate from a processor in a range from 5 gigabits per second to 40 Gbs.