What do all the knobs do?

After hunting through instructions manuals I made up this picture in case I forgot what the knobs do.

Needle and Thread Chart

I made up this chart for myself when I first got my sewing machine, to help me try and understand needle sizes and thread sizes. I don't really use it for choosing a needle, instead just select the needle depending on what I'm sewing. I hope it helps and if they are any inaccuracy's please let me know.