COBOL
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Q: How to handle negative numbers?

Answer:
Sign stored in PIC S9. SIGN IS LEADING/TRAILING SEPARATE CHARACTER for explicit sign byte. COMP-3 sign in low nibble. Display: S9(5)- shows trailing minus. +9(5) shows sign always. DB/CR for accounting format.
sign negative numbers
JCL
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Q: What is ACCTRG parameter?

Answer:
ACCT (accounting) provides billing information. On JOB card: ACCT=(account-number,additional-info). Installation-defined format. Passed to SMF for accounting records. May affect job processing priority.
acct accounting billing