fyi < fibonacci >
fyi < example of if statements >

n stores 2

fib stores n minus 1 if n is_less_than 3 otherwise -1

if fib is_less_than 0

    iterator stores 1

    fyi < store the first two values of the fibonacci sequence >
    anteprev_n stores 0
    prev_n stores 1

    fyi < compute fibonacci numbers until n is reached >
    while iterator is_less_than n minus 1
        fib stores anteprev_n plus prev_n
        anteprev_n stores prev_n
        prev_n stores fib
        iterator stores iterator plus 1
    repeat

otherwise

    message stores < try a higher value of n for more fun >
    show message

move_on

show fib