Substrates provided with a microstructured surface have a surface layer which. Information related to differences between the current version of the web page and a previous version of the web page is provided in response to user-initiated activity within a predefined region of the current version of the web page. The air dryer removes moisture in the air. As a result, when the inner race and the outer race are locked, roller’s stress is less prone to be concentrated around the thin-walled part, and the deformation of the thin-walled part can be prevented, and therefore the degradation of the durability of the one-way clutch can be prevented.