digraph g { "context" -> "Fibonacci" "0" -> "1" [label="fib",arrowhead=normal] "1" -> "1" [label="fib",arrowhead=normal] "*" -> "arithmetic(|_self>,|->,|1>)" [label="n-1",arrowhead=box] "*" -> "arithmetic(|_self>,|->,|2>)" [label="n-2",arrowhead=box] "*" -> "arithmetic( fib n-1 |_self>, |+>, fib n-2 |_self>)" [label="fib",arrowhead=box] "*" -> "arithmetic( fib |_self> , |/>, fib n-1 |_self> )" [label="fib-ratio",arrowhead=box] }