[O] Bug in latex export tutorial on worg ?

[Robert Goldman]

There is the following code block there:

#+begin_src emacs-lisp :results silent
  (add-to-list 'org-export-latex-classes
          '("per-file-class"
             "\\documentclass{scrartcl}
             [NO-DEFAULT-PACKAGES]
             [EXTRA]"
             ("\\section{%s}" . "\\section*{%s}")
             ("\\subsection{%s}" . "\\subsection*{%s}")
             ("\\subsubsection{%s}" . "\\subsubsection*{%s}")
             ("\\paragraph{%s}" . "\\paragraph*{%s}")
             ("\\subparagraph{%s}" . "\\subparagraph*{%s}")))
#+end_src

Is this still correct?  Or should this be :exports none instead of
:results silent?

Cheers,
r