Conditional text

[Giuseppe Bilotta <bourbaki@bigfoot.com>]

Hello,

I'd like to separate two blocks of text with some stuff which
depending on wether the two blocks are on the same page or not.

Example one: two paragraph are separate by a \blank of space, but
if there is a page change, then three starts are inserted on top
of the next page.

Example two: sections start without creating a new page, but if
they stay on the same page, then a line is drawn before them.

The nicest thing would be a command (to be used after a \blank)
like \ifstillonsamepageelse{do something}{do something else}.

Do I have to go through the referencing mechanism or is there
something built-in already?

--
Giuseppe "Oblomov" Bilotta