Dear all,
 
I think that I found the cause.
The page layout of my file is different from that of MetaFun manual.
After borrowing the \setuplayout from MetaFun-000.tex, it works correctly.

I am sorry to give you a wrong example.

Thank you for reading.

Best regards,

Dalyoung


> 2023. 2. 10. 오후 9:05, Jeong Dal via ntg-context <ntg-context@ntg.nl> 작성:
> 
> Dear all,
> 
> I copied the code of defining chapter command  from metafun-000.tex, and run it.
> But the result is different from that in MetaFun Manual.
> There is a big spaces between the number and the title which yields the number cannot be seen.
> I commented out several lines which seems to be not-related with chapter title.
> And, I changed
> 
> 	\def\ChapterCommand#1#2% —> \define[2]\ChapterCommand
> 
> Would you please test the following code to find out what is wrong?
> 
> Thank you for reading.
> 
> Best regards,
> 
> Dalyoung
> 
> 
> \startuseMPgraphic{circled}
>   pickup pencircle scaled 1mm ;
>   drawoptions(withcolor (.6+uniformdeviate.35)*white) ;
>   fill fullcircle xscaled 1.5cm yscaled 1cm ;
>   drawoptions(withcolor .625yellow) ;
>   draw fullcircle xscaled 1.5cm yscaled 1cm ;
> \stopuseMPgraphic
> 
> %\startnotmode[proof]
> %  \defineoverlay[circled][\useMPgraphic{circled}]
> %\stopnotmode
> 
> \define[1]\Circled%
>   {\framed
>      [background=circled,frame=off,offset=overlay]
>      {\color[darkred]{#1}}}
> 
> \setuppagenumbering[location=]
> \setupheadertexts[margin][][\hbox to \hsize{\hss\Circled\pagenumber\hss}]
> 
> \startuniqueMPgraphic{titled}
>   path p ; p := unitsquare xscaled \overlaywidth yscaled \overlayheight ;
>   pickup pencircle scaled 1mm ;
>   drawoptions(withcolor .625yellow) ;
>   draw llcorner p -- lrcorner p ;
>   setbounds currentpicture to p ;
> \stopuniqueMPgraphic
> 
> \defineoverlay[titled][\uniqueMPgraphic{titled}]
> 
> \define[2]\ChapterCommand%
>   {\setbox0=\hbox to \leftmarginwidth{#1\hss}%
>    \hskip-\leftmarginwidth
>    \hskip-\leftmargindistance
>    \framed
>      [background=titled,frame=off,offset=0pt]
>      {\box0
>       \hskip\leftmargindistance
>       #2}}
> 
> \define[2]\TitleCommand%
>   {\framed
>      [background=titled,frame=off,offset=0pt]
>      {#2}}
> 
> \setuphead
>   [chapter]%,section,subsection]
>   [command=\ChapterCommand,
>    style=\ss\bf\tfd,
>    color=darkred]
> 
> \setuphead
>   [title]%,subject,sububject]
>   [command=\TitleCommand,
>    style=\ss\bf\tfd,
>    color=darkred]
> 
> 
> \setupbodyfont[bonum,rm,12pt]
> \showframe
> 
> \starttext
> \startchapter[title={Introduction}]
> This is the chapter for introduction.
> \stopchapter
> 
> \startchapter[title={Function}]
> Now, we study the function.
> \stopchapter
> 
> \starttitle[title={References}]
> \startitemize[n]
> \item first
> \item second
> \item third
> \stopitemize
> \stoptitle
> 
> \stoptext
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