Joined: 15 Nov 2005 Posts: 117 Location: Chennai, India
Explicit redefines is the one which you give in the Working-Storage section.
ex: 05 WS-TO-DATE1 REDEFINES WS-TO-DATE
Implicit redefines is the one which comes into effect in FILE section FD. If the FD of a file contains more than one 01 level number, the second 01 level variable redefines the first 01 level variable.