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8: A block is a mass of data that is read at one time. Blocks are
9: different lengths under different operating systems; COHERENT
10: defines a block as being BSIZE bytes long.
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12: Information is read in blocks from block-special devices, such as
13: the hard disk or floppy disks. This is done to increase the
14: speed with which data are read from these devices; reading
15: characters one at a time, such as is done with character-special
16: devices such as terminals or modems, would be too slow.
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18: ***** See Also *****
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64: COHERENT Lexicon Page 1
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