[NTG-context] How to control \hrule width in header & footer

Hi all, I'm trying to add \hrule after header and before footer. Here is the testing code: ------------------------------------------------------------------------- \setupheader[after=\hrule] \setupfooter[before=\hrule\blank] \setupheadertexts [text][chapter][section] [section][chapter] \setupfootertexts [text][date][pagenumber][pagenumber][date] \starttext \chapter[ch1]{Toto} \section[sec11]{Sec 11} \input tufte \section[sec12]{Sec 12} \input tufte \stoptext ------------------------------------------------------------------- The result gives me horizontal rules too long. I would like make rule only in "text" location (with the length is \textwidth) not on left and right margins. Anyone could show me how to do that please. Thank you,