The BRKPTIM option sets the minimum amount of time that must elapse during a MAXSORT before operator communication at breakpoints after the SORTIME option OC value has expired. The BRKPTIM option is ignored if the SORTIME option is not specified as 'OC' or 'n,OC'.
Specify the number of minutes of execution time (nnnn) that must elapse before the operator is requested to continue or to terminate the sort. The default is 10 minutes.