The invention relates to an optical sensor for detecting light emission in combustion processes in a combustion chamber. The method comprises seamlessly combining a downloaded original content file with personalized information on a user device, and allowing the user either to use the combined original content and personalized information without possibility of personalized information removal, or to remove the personalized information after a fee payment. For display utilizing a relatively higher scale map, such as a map showing larger geopolitical areas, for example, relatively fine details may be omitted. An arm control link is positioned adjacent the upper plate of the housing member and couples with the wiper arm.