[NTG-context] question about rulethickness

Hi all, It looks like rulethickness can only be applied to all 4 sides of a cell all at once, or is there a way to specify the thickness of left|right|top|bottom? As the example shows I get a thicker frame around the 2 rows, but I want to use the normal frame thickness inside the cells. \starttext \setupTABLE[r][1,2][rulethickness=1pt] \bTABLE \bTR\bTD[nc=3] long text \eTD\eTR \bTR\bTD text \eTD\bTD text \eTD\bTD text \eTD\eTR \bTR\bTD even \eTD\bTD more \eTD\bTD text \eTD\eTR \eTABLE \stoptext Thanks, Jelle