digraph TopLevel {
    compound = true
    bgcolor = lightcyan1
    fontname = Arial
    fontsize = 8
    label = "TopLevel"
    node [
        fontname = Arial,
        fontsize = 8,
        color = black
    ]

    MBASICFile [
        fontcolor = black,
        URL = "classes/MBASICFile.html",
        shape = ellipse,
        color = palegoldenrod,
        style = filled,
        label = "MBASICFile"
    ]

    CPMFile [
        fontcolor = black,
        URL = "classes/CPMFile.html",
        shape = ellipse,
        color = palegoldenrod,
        style = filled,
        label = "CPMFile"
    ]

    CPMFile -> MBASICFile [

    ]

    DSKFile [
        URL = "classes/DSKFile.html",
        label = "DSKFile"
    ]

    DSKFile -> CPMFile [

    ]

}