Yeah, that's true. I agree that sometimes, it can be difficult to find what you want - if you don't know that there's a bunch of functions with "draw_", how are you supposed to find it? So you're definitely right that more "HOW TO DO [X]"-pages in the manual that cover certain specific aspects would be nice.

May I humbly ask you to post your request in "Blame the Manual", however? I've found jcl to be rather friendly about these kind of suggestions - after all, he himself probably knows the engine too well to understand what kind of problems those who do not know it's source code face.