[NTG-context] \noheaderandfooterlines to suppress header frame, too

Hello, this may have been posted here some time before, but - would it be possible to extend \noheaderandfooterlines command to temporarily suppress bottom frame, too? Suppose having the following code: ---- \setupheadertexts[left][right] \setupbackgrounds[header][bottomframe=on] \starttext \input knuth \page \noheaderandfooterlines \input knuth \stoptext ---- - On the page #2, header is not shown, which is OK, but header (bottom-)frame is still drawn, which is unwanted... Best regards, Lukas -- Ing. Lukáš Procházka | mailto:LPr@pontex.cz Pontex s. r. o. | mailto:pontex@pontex.cz | http://www.pontex.cz | IDDS: nrpt3sn | IČO: 40763439 Bezová 1658 147 14 Praha 4 Mob.: +420 702 033 396