Glad I could help but it looks like these other folks know more about it than me (which doesn't surprise me in the least).
I agree that this program in not very intuitive. Maybe it is to a graphics designer. I still can't figure out how to make a curve the way I want it. I suspect it is probably simple when you know how but it is very frustrating when you move one of those node things and the entire shape changes. But, to be fair, I haven't really applied myself to learning it. I just want it to be easy to do whatever I want whenever I need that particular thing, lol.