A gas regulator includes a housing and a pressure regulator positioned within the housing along a first axis for controlling the pressure of gas received from a pressurized source. A platform executes the determination program I before the platform employs the software body I with the software body II, and only when the determination results represent the permission for combination and use, the platform permits the software II to be combined and used with the software body I. The emulsion resin is produced by mixing beforehand this polymerizable polyurethane vinyl compound with the polymerizable vinyl monomer and reactive silane compound which may be added as needed under the condition of non-aqueous system, and then by polymerizing them in water. The field defines a non-rectangular intensity profile in the scanning direction.