>
> The better way is to define you own list alternative.
>>
>> \define[3]\ChapterList
>>  {\hbox
>>     {\hbox to .5em{#1}\hskip.5em
>>      \vtop{\hsize150pt\relax#2}%
>>      \hfil#3}}
>>
>> \setuplist[chapter][alternative=command,command=\ChapterList]
>
>
> I'll try that...
>

#1, #2, #3 being parameters which can be passed to \ChapterList, aka
\ChapterList[#1,#2,#3]. Is that correct ?

Best,
Alan