I was looking at this forum post. Using <!--BREAK--> used to work to force a page break when printing a PDF. It doesn't seem to work anymore (maybe new in version three?).
You can see a file using it:

You can see the output file (as a paginated PDF).
file.pdf
But it does not generate page breaks. Also, just an FYI (I was trying to look it up in your docs and see if it was different). It does reference having a special syntax, but the <!--BREAK--> isn't displayed on the page. Is it still the same syntax?