[NTG-context] Box flowed and hanging into the margin

I need a textbox with an opening and closing picture as border. This box should be flowed around by maintext and hanging into the outer margin (for reasons of space and design). It seems to be a simple task but I have no advance since days. Any idea? \setuphanging[location=right] \starttext \starthanging{ \placefigure[here,none]{} {\startcombination[1*2] {\externalfigure[line.png][width=5cm]}{\tfx\input ward \endgraf} {\externalfigure[line.png][width=5cm]}{} \stopcombination} }\input knuth \stophanging \stoptext