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Q: What is PIC clause editing?

Answer:
Picture editing characters: Z=zero suppress, *=check protect, +=sign, -=negative, CR/DB=credit/debit, $=currency, .=decimal, ,=comma, B=blank. Example: PIC ,ZZ9.99- displays $ 123.45-. Insertion characters add to display.
picture editing format
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Q: How to handle binary data?

Answer:
COMP/BINARY stores binary. PIC S9(4) COMP is halfword (2 bytes). PIC S9(9) COMP is fullword (4 bytes). PIC S9(18) COMP is doubleword (8 bytes). SYNC aligns for performance. Value range limited by bytes, not picture.
binary comp storage