it also shows of bad text conversion.
In word you should not let every sentence end with ^l or ^p.
In order to understand the exact structure of books you're better off learning html code.
^l = <br>, and ^p=<p>
it's not that hard.
If you want your text to look a certain way, creating it in HTML is probably the best thing you can do.
Book designer and the Sony reader, I think support html0.
That's very easy, there are only about 15 commands to learn to create a book!
The easiest thing you can do is create it in word, save it to html, and prune the text for html command strings that are not necessary.