Read–Eval–Print Loop
repl01.pu@startdot
digraph pds {
label="Read–Eval–Print Loop";
node [fontsize = 12, shape = box, style=rounded ];
s1 [label="Read"];
s2 [label="Eval"];
s3 [label="Print"];
s1 -> s2 -> s3;
s3 -> s1;
{rank = same; s2; s3;}
}
@enddot