Hans, Thank you for your answer.
you can do this:
\setuppapersize[S6] \setupitemize[1][before={\page}]
\starttext
\startitemize[n] \startitem \input knuth \stopitem \stopitemize
\startitemize[continue] \startitem \input ward \startitemize[a] \startitem first point \stopitem \startitem second point \stopitem \stopitem \stopitemize \stopitem \stopitemize
\stoptext
Unfortunately, I have a huge amount of level 1 items, only 10% of them enclosing some level-2 itemization. I bet it would be easier to insert \page with a perl script after each first \stopitem than embedding those 90% items within an itemization (as far as I understand). That's what I did when I converted my beamer presentation into conTeXt ones. In this case however, the code would be far less readable, since those \page will be only for screen mode. Is there any key I could use to introduce page breaks after each level 1 \stopitem ? Best regards, Damien Thiriet