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Q: How does OUTPUT statement work?

Answer:
OUTPUT defines SYSOUT processing options. //OUT1 OUTPUT CLASS=A,DEST=LOCAL,COPIES=2. Reference: //SYSOUT DD SYSOUT=*,OUTPUT=*.OUT1. Centralizes output attributes. Can specify JESDS for JES-level control. Forms, burst options available.
output sysout print
COBOL
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Q: How does ACCEPT and DISPLAY work?

Answer:
ACCEPT reads from console/system: ACCEPT WS-DATE FROM DATE, ACCEPT WS-INPUT FROM CONSOLE. DISPLAY writes to console: DISPLAY 'Message' WS-FIELD. UPON clause specifies destination. Limited in batch; mainly for debugging or simple interaction.
accept display io
JCL
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Q: Explain DD SYSOUT statement

Answer:
SYSOUT=class routes output to JES spool. SYSOUT=* uses MSGCLASS from JOB. SYSOUT=A specific class. Additional: COPIES=2, DEST=node.userid, FCB=fcb-name. Held output: HOLD=YES. OUTPUT statement for complex options.
sysout output spool
JCL
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Q: Explain DEST parameter?

Answer:
DEST routes output. DEST=nodeid.userid sends to remote. DEST=LOCAL for local printer. On OUTPUT statement or SYSOUT. JESDS respects DEST. Can be printer name or user. Network delivery support.
dest routing output