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INIT
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The routine is called with this value at the beginning of each file elaboration. The code executed in this case can be an
initialization code. The predefined routines set the return code to a space character.
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EXEC
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The routine is called with this value for each read record. This is the masking routine.
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LAST
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The routine is called with this value at the end of each file elaboration. The code executed in this case can be a final
elaboration code. The predefined routines do not use this value because no final elaboration is needed.
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AUTH ,
VERS ,
INFO ,
DESC ,
INPT ,
OUTPT
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The routine is never called for these values of the parameter. The code included in the predefined routines is written for
documentation purposes. We suggest you write similar code for customized routines.
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