** simple ditaa block
   :PROPERTIES:
   :DATE:     2011-08-19
   :END:
#+begin_src ditaa :file work-flow.png
    +-------+             +--------+
    |       |             |        |
    | Org   |------------>| Tex    |
    |       |             |        |
    +-------+             +--------+
#+end_src

#+name:
[[file:work-flow.png]]