[NTG-context] \setuphead and n*serried

Hi friends, I like [n*serried] option very much. Why I cannot use it in \setuphead instead of distance, too? %works \setuphead[subsubject][ alternative=text, style=\bf, distance=0.7ex] %does not work \setuphead[subsubject][ alternative=text, style=\bf, 1*serried] Regards, Vyatcheslav