** define a block with a name for noweb expansion
   :PROPERTIES:
   :tangle:   yes
   :noweb:    yes
   :DATE:     2011-07-01
   :END:

#+name: simple(something="something")
#+begin_src emacs-lisp
  something
#+end_src

another block including the first block
#+begin_src emacs-lisp
  <<simple(something="something else")>>
#+end_src