For users printing the topic itself you can insert a page
break as covered in Snippets on my site.
However, what you want is to indicate in the source where a
page break should occur just in the printed document. I don't think
the page break I referred to survives the trip to the printed
output. Because your splits are arbitary I think the only way is to
decide whether most topics should start on a new page or run on
from the previous so that most topics are as you want. Then you
will need to manually edit the smaller number in Word.
Thinking some more as I typed that...
All chapters start on a new page. Could you not rearrange the
print layout to take advantage of that?
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