if (!getroottable().rawin("Pack_Control")) Pack_Control <- {}

function Sq_Pack_Control(chunk) {
    
    local Pack_Json = Json_STL("buffer");
    Pack_Json.Parse(chunk, 0, false);
    local Op = Pack_Json.Get("op");

    if (Pack_Control.rawin(Op) == true) {
        Pack_Control[Op](chunk);
    }
    Pack_Json.Delete();
}