Aligning hboxes on top instead of on baseline

[Berend de Boer <berend@pobox.com>]

Hello All,

I want to `align' text on the top of their boxes instead of using the
baselineskip or whatever is causing the problem.

I've defined a chapter that puts its number in the right margin.
However, the number is much larger than the chapter title. TeX aligns
these on the bottom of the text, so the number `pushes' the chapter
title down. But I want them aligned at the top, so the number should
stick out to the bottom.

Is this possible to do independent of the body font and the selected
number font size?  I've done things like this by manual shifting things
down until it looked good, but perhaps their is a more elegant solution.

Demo:

-------------------------------
% interface=en

\setupbodyfont
  [ber,pos,ss]

% put chapter title above paragraph, number in right margin
\def\myhead#1#2%
  {\doifsomething{#1}%
     {\rlap{\hskip\tekstbreedte\hskip\rechtermargeafstand#1}}%
   #2}

\setuphead
  [chapter]
  [style=\bfc,
   numberstyle={\switchtobodyfont[36pt]},
   command=\myhead]

\starttext

\chapter{Test}

\input tufte.tex

\stoptext
--------------------------------------

Groetjes,

Berend. (-: