Writing Rules

There's an interesting discussion on what makes rules good over at BGG.  Lots of good ideas and useful observations there for people writing rules for their own games.  Also some differences of opinion - a lot of people seem to like Settlers of Catan's rules, which have an alphabetical section discussing various topics in the middle after the main rules.  I'm not opposed to a glossary or something like that, but the way Catan has it set up, I often find myself trying to remember what term a particular rule is listed under, which means I have to flip around through the alphabetical section to find the rule.  I'd much prefer to have all the rules listed in a structured way, where they relate to the part of the game being discussed, rather than alphabetically.