The present invention provides a production process for the production of an MAl2O4:Eu type long-lasting phosphor. A site which includes a judgment module and conversion module converts a received e-mail message into a data format matching the forwarding destination designated by the user information using the self function or in collaboration with another site. 3 \u03bcm:2Sn\u2003\u2003Formula wherein R represents an alkyl group having 5 to 15 carbon atoms. A crutch user positions his underarm atop the shoulder spring to support his weight, and the shoulder spring loops deflect outwardly when a user bears his weight on the crutch. The dimmable mirror assembly is suitable for locations within the interior of a vehicle and outside of the vehicle.