Run an inferior Octave process, I/O via `inferior-octave-buffer'.
This buffer is put in Inferior Octave mode. See `inferior-octave-mode'.
Unless ARG is non-nil, switches to this buffer.
The elements of the list `inferior-octave-startup-args' are sent as
command line arguments to the inferior Octave process on startup.
Additional commands to be executed on startup can be provided either in
the file specified by `inferior-octave-startup-file' or by the default
startup file, `~/.emacs-octave'.
(fn &optional ARG)