digraph newsmod {
    rankdir=TD;
    graph [fontname="arial"];
    node [fontname="arial"];
    edge [fontname="arial"];

    USER [label="User"]
    STOCK [label="Stock module"]
    HTTP [shape=box3d,label="HTTP server (inferium)"]
    REST [shape=box3d,label="REST server (inferium)"]
    DB [shape=box,label="Database (sled)"]
    CORE [shape=box,label="Logic core"]
    NEWS [label="External news API"]
    AI [shape=box,label="Sentiment analyzer (VADER)"]
    USER -> HTTP
    USER -> STOCK
    STOCK -> REST
    CORE -> DB [style="dashed"]
    REST -> CORE [style="dashed"]
    HTTP -> CORE [style="dashed"]
    CORE -> NEWS
    CORE -> AI [style="dashed"]
}