I'm not sure if this example is meant to be a great one -- they introduce it to illustrate different ways of typesetting. The Craft of Prolog by one of the aut

I'm not sure if this example is meant to be a great one -- they introduce it to illustrate different ways of typesetting. The Craft of Prolog by one of the authors gave similar general advice to yours, as I remember it. (Good book.) I've only glanced over this paper.