/CREATE    (default)
  /NOCREATE

  Determines whether a buffer is created when the input file is not
  found.  Processing this qualifier depends on the DECTPU application
  you are using.

  For EVE, the default is /CREATE.  If any input file specified on the
  command line does not exist, EVE creates a buffer using the file name
  and file type as the buffer name; or if you do not specify an input
  file, EVE creates an empty buffer named MAIN.

  Use /NOCREATE to edit only existing files.  Thus, if none of the
  input files are found, the editing session is aborted returning you
  to the DCL level, as in the following example:

     $ EDIT/TPU old.dat,new.dat /NOCREATE
     Input file or files do not exist: OLD.DAT,NEW.DAT
     $