Breaks are a feature to show a page content peace for peace and not all at once. It is made by adding {{{BREAK}}} in your data-tag, at best put the breaks as a single line with no other content in it before or after the break statement including whitespace.
At every {{{BREAK}}} the page is splitted into two pages, one containing the content until the break (and an continue link) and one page without this break. So a page with four breaks will create five subpages.
You can watch the subpages by clicking through this page in the address line of your browser. You will see, that you are switching from .../features4_01.html to .../features4_03.html. (To go back and forward use the < and > links in the navigation bar.)
