Headers / footers. Enhancement requests?

[Giuseppe Bilotta <bourbaki@bigfoot.com>]

Hello,

this comes out from a couple of question on ConTeXt header/footer
setups on the Italian TeX newsgroup. It basically turns into two
'enhancement request':

(1) ability to define left, middle and right header/footer-texts:
currently I can define EITHER left & right OR middle, but not all
of them. Maybe a syntax like

\setupheadertexts[left=pagenumber,right=chapter,middle=date]

in addition to the preexistent one.

(2) frame stuff attached to the header and footer both as a whole
and as separate 'blocks' (left, middle, right).

I need (2) basically to add a rule under the header, which by
now I must add using something like

\def\HFLine{\hskip\marginwidth\hskip\margindistance%
            \vrule height 10pt depth -9.8pt width\textwidth}
\setupheader[after=\HFLine]

which doesn't sound very ConTeXtish. Boxing/framing would allow
for interesting effects with not too much effort.

--
Giuseppe "Oblomov" Bilotta