[NTG-context] proportional column widths in natural tables?

Hi all! Is there a possibility to specify proportional column widths when using natural tables? E.g. If i want to set column 1 and 2 to have 2/7 and column 3 3/7 of the available broadth. \setupTABLE[column][1][width=2*] \setupTABLE[column][2][width=2*] \setupTABLE[column][3][width=3*] Thanks for your attention, --Stefan