A low-calorie whole grain cereal bars is provided that includes whole grain and binder in amounts effective for providing a cereal bar with at least about 15 weight % or more whole grain, at least about 5 weight % or more protein, about 5 weight % or more fiber, and at least 120 or less calories per 28 gram bar. The graphitized carbon fibers are formed by spinning, infusibilization, carbonization, pulverized mesophase pitch before graphitizing the mesophase pitch. At least one core in the processor includes a pipeline having a decode pipe; and a logical power throttling unit coupled to the device to receive the output signal, and coupled to the decode pipe. Equally importantly, the bundled features provide a flexible representation that allows simple and robust geometric constraints to be efficiently enforced when querying the index. That is, a cluster having the reference number 0 is released as a free area, thus facilitating management of a file and realizing effective use of a recording medium.