Hi Hans, Some time ago, you offered this code to respond to a specific request from me. I used this code again and wanted to know if it was possible for the title "Algorithm" to be automatically centered based on the content. Thank you Fabrice \definecolor[MyBlue][c=0.2 , m=0.03, y=0.00, k=0.00] \definecolor[maincolor] [b=.5] \defineframedtext [MyFrame] [frame=off, background=MyFrame, width=fit, height=fit, style=small] \startuseMPgraphic{MyFrame} path b; picture p; p := textext.rt("\tfx\bf\white\framedtextparameter{Title}"); p := p shifted (2BodyFontSize,OverlayHeight-ypart center p+.25ExHeight); b := boundingbox p leftenlarged .5EmWidth rightenlarged .5EmWidth topenlarged .5EmWidth bottomenlarged .5EmWidth ; fill OverlayBox withcolor "MyBlue" ; fill b withcolor \MPcolor{maincolor} ; draw p ; setbounds currentpicture to boundingbox currentpicture enlarged 2mm ; \stopuseMPgraphic \defineoverlay [MyFrame] [\useMPgraphic{MyFrame}] \starttext \MyFrame[Title=Algorithme]{% \m{a\gets 2x-1} \m{b\gets a²-1} \m{c\gets b\div 4} \m{d\gets c-a+x} } \stoptext