[NTG-context] changing numbers of columns

Hi, is it possible to change the number of columns on the same page? small example: a) text text text text \startcolumnset[n=2] bla bla bla \column bla bla bla \stopcolumn b) text text text text The mixing of a) and columnset is o.k. The mixing of columnset and b) wil produce a new page with b) on the second page, where b) can be normal text or another columnset. Bernd