+-------------------------------IBM Extension--------------------------------+
When Format 7 of the SET statement is executed, the address contained in pointer-data-item is increased (UP BY) or decreased (DOWN BY) by a value that corresponds to the value in the sending field.
SET Statement - Format 7
.-------------------.
V |
>>-SET----pointer-data-item-+--+-UP BY---+---------------------->
'-DOWN BY-'
>--+-identifier-8------------+---------------------------------><
+-integer-3---------------+
'-LENGTH OF--identifier-9-'
Identifier-8 cannot be a floating-point data item.
+----------------------------End of IBM Extension----------------------------+
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