An elliptical trainer includes a base, a post, a circular movement unit, two elliptical movement units and a stride-adjusting device. The materials can be processed thermoplastically to give shaped articles which are biodegradable and physiologically nonhazardous. The change request and the hash are stored in a lockable non-volatile buffer which, once locked, requires a system reset to access. Page-in costs include read costs, fixup costs and decompression costs, and page-out costs include write-back costs and compression costs. A rinse step can follow the stripping of the modified photoresist. According to the invention the successive layers are applied in layer planes oriented inclinedly relative to the surface of the substrate plate.