Part IV. Object Hierarchy

    GObject
        GooCanvasItemSimple
            GooCanvasGroup
                GooAxis
                GooPolax
                GooCurve2d
                GooBar2d
                GooBox2d
                GooPie2d
    GooDataPoints
    GooAxis
    GooPolax
    GooCurve2d
    GooBar2d
    GooBox2d
    GooPie2d