Rewards programs in which rewards are awarded for a series of transactions using a universal transaction associating identifier to associate transactions in common within each rewards program in a reward processing system. The well formed XML file fully represents the word-processor document, and fully supports 100% of word-processor’s rich formatting. In this method, a first insulating layer is formed on the surface. The provided superlattice structure reduces a driving voltage by transferring charges through the holes in the first material layers and the second material layers while maintaining a predetermined optical confinement characteristic. Each cutting edge lies on a respective imaginary sphere having a radius which has a center which that is spaced from the cutting edge in a direction toward the fastening end and spaced radially from the center axis. Disclosed is production of a cover film for solar cells by laminating weather-resistant layer or a surface protective layer, and an encapsulant resin layer comprising a resin composition that contains an ethylene-a-olefin random copolymer and an ethylene-\u03b1-olefin block copolymer both having specific thermal properties.