It seems the
@@latex: @@ and
@@odt: @@ does not work for lists or paragraphs with blank lines.
@@odt: - Xyzzy! - Nothing happens @@
is exported to latex.
How can I have some paragraphs exported only by one backend?
The @@backend: @@ construct doesn't work with newlines. I think you can do something like this to get a selective export only for a particular backend, in this case html. I am not sure if you can also get other non-html formatting in this.
#+BEGIN_EXPORT html conditional multi line paragraph #+END_EXPORT