You can code comments by placing an asterisk (*) in column 1 of your SYSIN.
Example
//SYSIN DD *
* Copy production table space
COPY TABLESPACE ACPDBSMP.ACPTS001
COPYDDN(LOCALP,LOCALB)
RECOVERYDDN(RECOVRP,RECOVRB)
FULL YES
//SYSIN DD *
* ANALYZE YES reports results without deletion
MODIFY RECOVERY TABLESPACE ACPDBSMP.ACPTS001
DELETE WHERE START_RBA < X'0003732E40AF'
ICFDELETE YES
ANALYZE YES
You can also code comments by preceding information with a double hyphen (--). A comment starts with the hyphens and runs to the end of the line. You can place the double hyphen in column 1 through column 70, but you cannot break it across lines.
Example
//SYSIN DD *
-- Copy production table space
COPY TABLESPACE ACPDBSMP.ACPTS001
COPYDDN(LOCALP,LOCALB)
RECOVERYDDN(RECOVRP,RECOVRB)
FULL YES
//SYSIN DD *
-- ANALYZE YES reports results without deletion
MODIFY RECOVERY TABLESPACE ACPDBSMP.ACPTS001
DELETE WHERE START_RBA < X'0003732E40AF'
ICFDELETE YES
ANALYZE YES
All characters on the line following the comment designation, both those specified with an asterisk in column 1 and those specified with a double hyphen, are ignored.