OPTION COPY
  OUTREC OVERLAY=(31:11,10,ZD,DIV,+1200,TO=PD,LENGTH=6,
                  37:11,10,ZD,MOD,+1200,TO=PD,LENGTH=4)

This example illustrates how you can use the OVERLAY parameter with OUTREC to change certain columns in your records without affecting other columns.

Positions 31-36 of the reformatted input records are overlaid with a 6-byte PD value equal to the quotient of the 10-byte ZD value at positions 11-20 divided by +1200. Positions 37-40 of the reformatted input records are overlaid with a 4-byte PD value equal to the remainder of the 10-byte ZD value at positions 11-20 divided by +1200. The data before positions 31-40 and after positions 31-40 are not affected.