Hello,
I would like to modify the file below to :

- center the title "Sommaire"
- delete the line of the first page
- center the title of each chapter
- delete the line on each page with the title of the chapter

Thanks for your help
Fabrice

##################################################################################
\usemodule[visual]

\mainlanguage[fr]

\setuphead[chapter][commandbefore={:\,},header=empty]

\setuphead[subsection][style=bold]

\setuphead[section]
          [distance=\zeropoint,
           style=bold,
           commandbefore={\space\endash\space}]

\setuphead[title][commandbefore={}]

\setuplayout
  [height=middle,
   width=middle,
   backspace=2cm,
   topspace=10mm,
   bottomspace=10mm,
   header=10mm,
   footer=10mm,
   footerdistance=10mm,
   headerdistance=10mm]

\definelayout
  [firstpage]
  [header=empty]


\setupbackgrounds[header][text][bottomframe=on]

\setupheadertexts[{\getmarking[section]}]
                 [pagenumber]
                 [{\getmarking[chapter]}]
                 [pagenumber]


\setuppagenumbering[alternative=,location=]


\setuplabeltext[fr][chapter=Chapitre ]

\definestructureconversionset
      [structure]
      [n, R, n, n, n]

\definestructureconversionset
      [digits]
      [n, n, n, n, n]

\setupheads[sectionconversionset=structure]

\setuplist[chapter][style=bold,width=5mm]

\starttext

\starttitle[title={\bf Sommaire}]
\placelist
  [chapter,section,subsection]
  [criterium=all,
   alternative=c]

\stoptitle

\startchapter[title=First chapter]
\startsection[title=Fist section]
\startsubsection[title=First subsection]
 \dorecurse{10}{\fakewords{120}{120}\par}
\stopsubsection
\stopsection
\stopchapter
\startchapter[title=Second chapter]
\startsection[title=Second section]
\startsubsection[title=Second subsection]
\dorecurse{10}{\fakewords{120}{120}\par}
\stopsubsection
\stopsection
\stopchapter
\stoptext
##################################################################################