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COPY, Qualifiers, /ALLOCATION
 *Conan The Librarian 

       /ALLOCATION=number-of-blocks

    Forces the initial allocation of the output file to the
    specified number of 512-byte blocks. If you do not specify the
    /ALLOCATION qualifier, or if you specify it without the number-
    of-blocks parameter, the initial allocation of the output file is
    determined by the size of the input file being copied.
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