The JCL for the MULTIIN facility is similar to the JCL for a standard sort or copy. The primary difference is that the MULTIIN JCL must contain SORTMInn DD specifications in place of the SORTIN DD specification. To initiate a SORT or COPY with the MULTIIN facility using job control statements, specify PARM=’MULTIIN’ on the EXEC statement. When a SORT or a COPY MULTIIN application is invoked from a program, specify the MULTIIN parameter in the $ORTPARM data set.