HP 3000 Manuals

EDIT/3000:Reference Manual

1-6.  OUTPUT FILE 

EDIT/3000 normally transmits messages (and prompt characters in
interactive sessions) to the OUTPUT file.  Generally, this file is a
terminal in interactive mode and a line printer in batch mode.  EDITOUT
is EDIT/ 3000's formal designator for the output file.

MPE/iX 5.0 Documentation