Individual records of a data set include data and semantic information to describe the data. The methods may be performed by a bit-field optimizer of a compiler. The elongate duct structure provides a fluid passageway for diverting aqueous humor from the anterior chamber of the eye. The accessed voice signals are processed and converted to analog signals by the voice-processing unit. A thin film EL device of the present invention uses, as a luminescent layer, a charge-transport luminescent material that has, within a molecule, a portion contributing to charge transport and a portion contributing to luminescence where at least two molecular orbitals contributing to luminescent transition are localized. The element is fixed relative to the sensor and has a plurality of optical portions respectively arranged in a plurality of patterns relative to a plurality of groups of the pixels.