It is not clear from your question whether you are after a line break (your title) or a page break (question text).
However, if you are after a page break, which I think you (Ctrl-Enter is the usual shortcut for it), there is no support in notepad ++ afaik, mainly because standard text files do not support them.
UltraEdit, , , , , . ++ , .
wiki-
http://sourceforge.net/apps/mediawiki/notepad-plus/index.php?title=Printing_And_Exporting
. 5.6.8:
FF (ASCII Decimal 12) [FF], , ,