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==========================       EXAMPLE # 4       ============================
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THE INPUT FILE:  List of invoices for a computer store

WHAT WE WANT:    (1) Copy only items for the IBM-PC and the Macintosh.
                 (2) Move the columns around and put more space between them.
                 (3) Change the way a negative amount is represented
                     (i.e. change 345.00- to -345.00).

HOW WE DO IT:    (1) We use clustered ACCEPTs to make this selection.
                 (2) We use SET and PAD for this step.
                 (3) We use IF to detect the sign, then INSERT it as needed