Some of you may find this handy, particularly those new to the sport or less experienced. I am sure there are better diagrams and explanations than this but, it's not the worst. I've posted on the General Discussion section but, it's pretty important for lure anglers landing fish.
I spotted this image floating around on Facebook which some may find useful. It's perhaps not the best diagram but, you get the idea. People fishing on a boat or in deep lochs or fjords will find it especially useful.