I do a lot of LaTeX. With LaTeX there is some attempt to be declarative, to separate layout from context. But I find that while 99% of the time the separation

I do a lot of LaTeX. With LaTeX there is some attempt to be declarative, to separate layout from context. But I find that while 99% of the time the separation works, there just are times you need to tweak or fiddle. I currently use a graphics-drawing system that is not very declarative at all (Asymptote). Going to more declarative approach is a very attractive idea, but I couldn't see quite how much tweakability there is in this system. I'd be surprised if you could get away with none at all.