Hi Fabrice,

Is this what you are looking for?
Best regards: OK

\setuptextrules[width=.5cm]

\define[1]\ProprieteHeadcommand
{\textrule[top]{Propriété}}

\defineenumeration[propriete]
[headstyle={bold},
style=italic,
number=no,
headcommand=\ProprieteHeadcommand,
numbercommand=\groupedcommand{}{\nbsp},
after=\textrule]

\starttext
\startpropriete
  \input ward
\stoppropriete
\stoptext

On 1 Oct 2019, at 11:09, Fabrice Couvreur <fabrice1.couvreur@gmail.com> wrote:

Hello,
The top line is in the text, how to fix this problem ?
Thank you.
Fabrice

\setuptextrules[width=0.5cm]

\define[1]\ProprieteHeadcommand
  {\textrule[top]{#1}}

\defineenumeration
  [propriete]
  [text=Propriété,
   title=yes,
   headstyle={bold},
   alternative=serried,
   style=italic,
   number=no,
   headcommand=\ProprieteHeadcommand,
   numbercommand=\groupedcommand{}{\nbsp},
   after=\textrule]

\starttext
\startpropriete
  \input ward
\stoppropriete
\stoptext
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://context.aanhet.net
archive  : https://bitbucket.org/phg/context-mirror/commits/
wiki     : http://contextgarden.net
___________________________________________________________________________________