Dear all, as said by the title of the e-mail, I try to put the page number
in the middle (both vertically and horizontally) of the margin. I tried a
custom command like
\def\mypagenumber#1{%
\vfill #1 \vfill
}
\setuppagenumbering{location=margin,command=\mypagenumber}

but, unfortunately, I got an error message on the \vfill. Is there a direct
way to place my page number ?
Regards,

-- 
Flavien.
----------------------------
"Quantum objects are completely crazy but, at least, they are all crazy in
the same way." R.P. Feynman.