CALL EPEND (LUNIT,*IBUF*,IERR*)
Mandatory at end of job for all output units (or EPCLOS)
Acts like EPCLOS, but in addition writes an end of file mark on
LUNIT
if output unit. On IBM and UNIVAC it must be called
to properly terminate output units.
Note that on IBM this has the same effect as EPCLOS - the filemark
written is backspaced over so a new write to the same logical unit
will not result in a new physical file but will merely continue the
existing file. Users who really want to write a multi-file tape on
IBM within the same job step must call EPEND and then
IODD
[3].