• State "DONE" from "" 2010-03-22 Mon 08:40

for example, the following simple example

#+begin_src emacs-lisp :var two=(+ 1 1)
  (sqrt two)
#+end_src

#+results:
: 1.4142135623730951

Or this more interesting usage, which pulls variable values from headline properties

*** example headline w/property
    :PROPERTIES:
    :special:  89
    :last-name: schulte
    :END:

#+begin_src emacs-lisp :var special=(string-to-number (org-entry-get nil "special" t))
  (+ special 1)
#+end_src

#+results:
: 90

#+begin_src emacs-lisp :var last-name=(org-entry-get nil "last-name" t))
  (message "hello %s" last-name)
#+end_src

#+results:
: hello schulte