* graphviz dot
#+begin_src dot
digraph G {
  main -> parse -> execute;
  main -> init;
  main -> cleanup;
  execute -> make_string;
  execute -> printf
  init -> make_string;
  main -> printf;
  execute -> compare;
}
#+end_src

* gnuplot
#+begin_src gnuplot :results silent
reset

set title "Putting it All Together"

set xlabel "X"
set xrange [-8:8]
set xtics -8,2,8


set ylabel "Y"
set yrange [-20:70]
set ytics -20,10,70

f(x) = x**2
g(x) = x**3
h(x) = 10*sqrt(abs(x))

plot f(x) w lp lw 1, g(x) w p lw 2, h(x) w l lw 3
#+end_src