digraph HumanGate {
    graph [goal="Test human gate with auto-approve"]
    rankdir=LR

    start [shape=Mdiamond, label="Start"]
    exit  [shape=Msquare, label="Exit"]

    draft   [label="Draft", prompt="Write a short greeting message.", shape=tab]
    approve [label="Approve?", shape=hexagon]
    ship    [label="Ship", shape=parallelogram, script="echo shipped"]
    revise  [label="Revise", prompt="Revise the greeting.", shape=tab]

    start -> draft -> approve
    approve -> ship   [label="[A] Approve"]
    approve -> revise [label="[R] Revise"]
    ship -> exit
    revise -> draft
}