Thanks for the fast reply!
Actually it is what I do (^p^p for ^p), but I really like the way writer2xhtml
Ignore hard line breaks
Ignore empty paragraphs
Ignore double spaces
Anyway, more and more I find it easier to deal directly (in code view) with the epub file and with the help of Sigil I can "regex" the empty paragraphs that I have not found in the doc.
Thanks again and have a nice day awp.
PS To Montyp535
: "margin-bottom: 2
em" was just an example! You can set it up to your liking.