It has something about 2W 1W 1N and 2N. And when I go to 2W, a little icon above said frequency gets bigger. And when I go towards 2N, its gets smaller.
So I am guessing W = wider and N = narrow.
I have played around with it a bit, and it seems to make some big differences. The only thing is I can only select one of the said frequencies in the HIGH - MID - LOW that I mentioned above. Like if I go to LOW, I can only select and adjust one of the frequencies I choose, like 80Hz.
Guess I am going to have to really try a lot wth these settings. And with the help I got here I think I understand it a lot more. Thanks.