I haven't tried this yet but CSS has pagebreak commands:
http://www.javascriptkit.com/dhtmltu...agebreak.shtml
page-break-before:
page-break-after:
Something like this (in ePub):
<style>
.breakmypage { page-break-after : always; }
</style>
<span class="breakmypage">Page 99</span>
Pagebreaking might not look good on device since you can't be sure what font-size you will use. So eventually page breaking will not have the same (good) effect as in pbook.