What is the ConTeXt version of the LaTeX

\addtocounter{enumi}{1} ?

I want to increment my numbering in an itemize environment, so that the list is typeset as

1.  First item
2.  Next item
3.  Another item
5.  Yet another
6.  And so on

I'm typing out solutions to questions in some student notes, and the missing item is a question for which a written solution is not necessary.

Thanks,
Alasdair

--
Blog: http://amca01.wordpress.com
Web:  http://sites.google.com/site/amca01/
Facebook: http://www.facebook.com/alasdair.mcandrew