EFS formats for SORT, MERGE, INCLUDE, and OMIT control statements

In addition to using the SORT, MERGE, INCLUDE, and OMIT control statements as explained in "Program Control Statements", you can also use two additional formats on the FIELDS and COND parameters. The formats are termed D1 and D2 and apply as follows:

D1 with the FIELDS parameter of the SORT or MERGE statement
D2 with the COND parameter of the INCLUDE or OMIT statement.

Use D1 and D2 to reflect data types that require special processing by EFS program exit routines EFS01 and EFS02, respectively. You cannot specify D2 format with the INCLUDE or OMIT parameters of the OUTFIL statement.