** wrap noweb references in comments
   :PROPERTIES:
   :DATE:     2011-01-16
   :END:
#+name: wrappable
#+begin_src emacs-lisp
  (setq x (+ 4 x))
#+end_src

#+begin_src emacs-lisp :comments noweb :noweb yes :tangle yes
  (let ((x 1))
    (message "x=%s" x)
    <<wrappable>>
    (message "x=%s" x))
#+end_src