In the INPUT PROCEDURE, the input file is opened, records are read and edited and then are released to the sorting operation. Finally the file will be closed.
[plain]RELEASE recordname FROM inputrecord[/plain]
In the OUTPUT PROCEDURE, output file is opened, the sorted record is returned to the Output record and then the record will be written. Finally the file will be closed.
[plain]RETURN file RECORD into outputrecord[/plain]
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