** looking at source name exports
   :PROPERTIES:
   :DATE:     2010-02-09
   :END:

#+name: fibonacci
#+begin_src emacs-lisp :var input=0
  (defun fib (n)
    (if (> n 1)
        (+ (fib (- n 1)) (fib (- n 2)))
        1))
  (fib input)
#+end_src

#+name: fibonacci
: 1

now applying our Fibonacci function

#+call: fibonacci(input=5)