The present invention provides novels genes encoding methyl butenol synthase, methy butenol synthases and their use in methyl butenol production. Thinning operating systems can include automatically identifying an undesired functionality of the number of functionalities during runtime and removing from the operating system at least one of the number of computing components providing the undesired functionality as a result of the automatic identification to thin the OS. Data for each group is coded and modulated based on a particular coding and modulation scheme to provide modulation symbols, and the modulation symbols for each selected channel are weighted based on an assigned weight. An ID-generating circuit generates an expected ID for the unit data in the receive data. The present invention particularly relates to the soybean variety OW1012936 and its progeny, and methods of making OW1012936. In transition for change between the spark ignition burning mode and the homogeneous charge compression ignition burning mode, the following measure is taken: a period during which the lift amount andor the valve opening period of an intake valve is made smaller than a set value for the homogeneous charge compression ignition burning mode is provided.