> Fabrice Couvreur <mailto:fabrice1.couvreur@gmail.com>
> 3. August 2015 10:47
> Hi,
> I wish the numérotion pages is reversed at each new page: right left 
> right ...
ConTeXt documents are by default single sided with no distinction 
between left and right pages,
when you want left/right pages you have to enable them with the 
\setuppagenumbering command.

With \setuppagenumbvering[alternative=doublesided] you get a doublesided 
document with
a mirrored layout on the left page. When you use 
\setuppagenumbering[alternative={singlesided,doublesided}]
you get also a doublesided document but the margins on the left page is 
the same as right page margins.

You should be aware as well that chapters starts on a right page in a 
doublesided document
but you can change this with \setuphead[chapter][page=yes].
> I wish the bottom of the title page of each section of the current page.
Do you want this?

\setupfootertexts[{\getmarking[section][top]}]

Wolfgang