Answer Posted / khasim

We can regroup using RENAMES.

02 MM PIC X(2).
02 DD PIC X(2).
02 YY PIC X(2).
66 DATE RENAMES DD TRRU YY.

We can devide an Element to multiple elements using
REDEFINES.

02 DATE1 X(6).
02 DATE2 REDEFINES DATE1.
05 MM PIC X(2).
05 DD PIC X(2).
05 YY PIC X(2).

This is main defference.
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