Hardcore legal writers know the way text looks on a page affects a reader's understanding. Bryan Garner's book The Winning Brief, for example, contains eight chapters under the heading "Becoming Proficient in Designing Text."
If you don't own Garner's book, take a look at a recent article from the Journal of the Association of Legal Writing Directors: "Painting with print: Incorporating concepts of typographic and layout design into the text of legal writing documents," by Ruth Anne Robbins (pdf).
The article includes tips like these:
- Unless required by a court, never write headings in ALL CAPS;
- Don't justify text; instead, simply align it on the left side;
- Use headings, and vary their size to indicate hierarchy.
There's a lot more in the article, plus an appendix that includes "all federal appellate and state court rules affecting typography used in briefs." (Thanks to a reader for the link.)