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piece function (See related posts)

    piece: func [
        {Returns one item from a series of fixed size "pieces".}
        series [series!]
        index  [integer!] "Item number, not series offset"
        size   [integer!] "Size of each piece in the series"
    ][
        ; Remember there is no precedence to math ops; just left-to-right.
        copy/part at series (index - 1 * size + 1) size
    ]
to REBOL series piece by gregg.irwin on Tue Jan 10 01:18:02 -0500 2006

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