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 For 'X' shelf 'Y', size 'Z'. For 'A' shelf 'B', size 'C'.
     where Y is the name of the shelf being copied to and and X is the
type of the shelf either counter, stream or switch and Z is the number of
items in the shelf;
and B is the name of the shelf being copied and A is its type either counter,
stream or switch and the C is the number of items in the shelf.
During the execution of repeat over applied to a shelf, the
number of items in the shelf may not be reduced to a value less than the
number of items the shelf had at the beginning of the repeat over.
Copyright © Stilo International plc, 1988-2010.