I haven't found any manual for Steam version on the web and now I have a question regarding raceline in Time Attack mode. What do the colors and dotted lines actually mean? I've figured it out that two red dots on the left and right mean the brake point and green line means throttle. But, what about grey line and dotted lines? What does "loaded raceline" mean? How can you load a raceline? Where can you get saved racelines? And finally, are those racelines any good?