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ROL (rotate-left) function (See related posts)

    ROL: func ["Rotate Left" s [series!] n [integer!]][
        n: n // length? s
        append copy at s add n 1 copy/part s n
    ]
to REBOL series rotate ROL rotate-left by gregg.irwin on Tue Jan 10 01:08:52 -0500 2006

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