digraph diagrams {
    rankdir = LR
    subgraph cluster_code {
        label = "Code Transformations"
        QSP -> intermediate [label="parser.lisp (esrap)"]
        intermediate -> Parenscript [label="ps-macros.lisp"]
        Parenscript -> Javascript [label="main.lisp"]
    }
    subgraph cluster_js {
        label = "Javascript modules call hierarchy"
        user -> "ps-macros"
        user -> intrinsics
        "ps-macros" -> intrinsics
        "ps-macros" -> api
        intrinsics -> api
    }
}