Pieces of administrative information on the used states of the respective units of an engine EG are renewably saved in a RAM 107 provided in an engine controller 10. The magnet assembly includes a core and an armature. The informativity of the constituents in a phrase or sentence is determined and the parts of speech having lower information content and having a low effect on grammatical readability of the phrase or sentence are selectively compressed. The body has a second internal wall defining a second opening through the body, defining a second opening centerline. The results can be correlated to sunlight in the user’s location, and can also account for changes in the users location, sunlight during the user’s sleep cycle, and other schedule modifying events.