[NTG-context] overfull gone?

Hi, in order to easily see overfull lines I used \overfullrule30\points : this gave a clear black box in the right margin. Is this command (\version[temporary]) gone?? Please have a look at the example below: no overfull indicator ... Steffen --- \setuppapersize[A6] \setupexternalfigures[location={default}] %\version[temporary] \overfullrule30\points% < BLACK BOX? \starttext \startcolumns[n=3] % Overfull lines will have slugs in colum margins. \input linden % Underfull hboxes get no warning x \stopcolumns \stoptext