Rules scattered throughout the book. Rules hidden in the body text. Rules you have to look up instead of finding them in one place.
A majority of roleplaying books from major publishers are set up this way, and it’s a shame. Usability looks different.
I don’t know why the big publishers don’t take a page from the small ones. There are so many well-made rulebooks. The people in charge just need to open their eyes. For instance, what Chris McDowall has done with Bastionland (all relevant information about a topic is always on two facing pages) is groundbreaking. But even there you can see that the big-name publishers basically don’t give a shit. Gamers have been successfully raised to be consumers and will buy any crap.