Hi, My first solution is incorrect ; with the second solution, I don't understand why the first chapter is not numbered while the second is with number 1. Thanks. Fabrice \unexpanded\def\HeadTitle#1#2% { \FramedText{{\cap\labeltext{chapter}}\space#1 \\ \bfc#2} } \unexpanded\def\processheadnumber#1% {\getmarking[chapternumber]} \setuphead [chapter] [style=\bfd, align={flushleft,broad}, numbercommand=\processheadnumber, command=\HeadTitle] \starttext \startchapter [title={La récurrence}] \startsection[title={Le principe de récurrence}] \dorecurse{10}{\input knuth} \stopsection \startsection[title={Le raisonement par récurrence}] \dorecurse{10}{\input knuth} \stopsection \startsection[title={Récurrences fortes}] \dorecurse{10}{\input knuth} \stopsection \startsection[title={Exercices corrigés}] \dorecurse{10}{\input knuth} \stopsection \stopchapter \startchapter [title=Combinatoire-Dénombrement] \dorecurse{10}{\input knuth} \stopchapter \stoptext Le lun. 12 juil. 2021 à 16:32, Fabrice Couvreur a écrit :

Hi, For my book, the header for each chapter should be like the attached image. I don't know if I am using the best method, but the result looks like what I want. Nevertheless, I am having some problems : 1. the header appears on each page ; 2. the title of the chapter should not appear in the body of the text. Thanks for your help. Fabrice

\definecolor[MyColorA][r=0.8784, g=0.8784, b=0.8784] \defineframedtext [FramedText] [ offset=0.6em, style=, toffset=\lineheight, background=color, backgroundcolor=MyColorA, foregroundstyle={\switchtobodyfont[11pt]}, align={left, broad}, frame=off, width=\textwidth, ]

\setuplabeltext [en] [chapter=CHAPITRE]

\setuphead [chapter] [bodypartlabel=]

\startsetups [header] \labeltext{chapter} \getmarking[chapternumber] \stopsetups

\setupheadertexts [] [{\FramedText{{\cap\labeltext{chapter}\space\getmarking[chapternumber]} \\ \bfc\getmarking[chapter]}}] [] [\FramedText{{\cap\labeltext{chapter}\space \getmarking[chapternumber]} \\ \bfc\getmarking[chapter]}]

\setuppagenumbering [alternative=doublesided,location=] \starttext \startchapter [title=La récurrence] \startsection[title={Le principe de récurrence}] \dorecurse{10}{\input knuth} \stopsection \startsection[title={Le raisonement par récurrence}] \dorecurse{10}{\input knuth} \stopsection \startsection[title={Récurrences fortes}] \dorecurse{10}{\input knuth} \stopsection \startsection[title={Exercices corrigés}] \dorecurse{10}{\input knuth} \stopsection \stopchapter \startchapter [title=Combinatoire-Dénombrement] \dorecurse{10}{\input knuth} \stopchapter

\stoptext[image: pied_3.png]