A linked list of offsets into the extract buffer will be passed to your EFS program. The offsets show the starting positions into the buffer area of any EFS control fields specified on the SORT or MERGE FIELDS operand. The offsets are sent only for EFS control fields and are sent in the same order as specified on the FIELDS operand. If no EFS control fields exist, the address to the offsets is zero.

DFSORT frees any storage it acquired for the extract buffer offsets list. The format of the extract buffer offsets list is: