Word Perfect is used for many court cases because it is the only WYSIWYG word processor that paginates footnotes according to the US legal rules. In fact, it had a lock on the DoJ market for ages (and maybe still does) based solely on that. Word could never accommodate it because it breaks backwards compatibility (and whatever you say about MS's shady past, this is something that they stuck to even though it cost them a fair amount). I worked on WP when Corel first acquired it...