Worth just quickly noting that the default for \part is placehead=no. You
need to explicitly set placehead=yes for it to actually output the heading.
See https://wiki.contextgarden.net/Command/_section#Parts

On Sun, 24 Oct 2021 at 00:02, Bruce Horrocks via ntg-context <
ntg-context@ntg.nl> wrote:

>
>
> > On 23 Oct 2021, at 14:51, Gerben Wierda via ntg-context <
> ntg-context@ntg.nl> wrote:
> >
> >
> >> On 23 Oct 2021, at 15:34, Wolfgang Schuster <
> wolfgang.schuster.lists@gmail.com> wrote:
> >>
> >>  Gerben Wierda via ntg-context schrieb am 23.10.2021 um 15:20:
> >>> I’d like a book with chapters to have sections/parts, e.g. something
> that groups a few \chapter elements together. Is there support for this in
> LMTX? I.e. in such a way that it also shows up in the table of contents?
> >>
> >> You can use \part.
> >
> > Yes. Thanks. But that leads to additional questions:
> > - how do I get the parts to show up in the table of contents? Because I
> tried \part but it did not show up
> > - how do I let chapters number on (not restart in each part, and not a
> x.y number but simply ‘2. Chapter’
> > - what is a good way to create actual RHS ‘title’ pages for each chapter?
> > - how do I get parts to number with Roman numerals?
>
> I define my own versions of \part and \chapter (called \Part and \Chapter)
> and specify a different display style using setups. The definition for
> \Part is below, \Chapter is very similar so I haven't included it.
>
> %% Double rule above part title
> \startsetups PartSetup
>  \setupheader[state=empty]
>  \par
>  \startMPcode
>    draw (0,2mm)--(TextWidth,2mm) withpen pensquare scaled 1.5mm ;
>    draw (0,0)--(TextWidth,0) withpen pensquare scaled 1.0mm ;
>    clip currentpicture to unitsquare yscaled 1cm xscaled TextWidth
>  \stopMPcode
> \stopsetups
>
> \define[2]\placePartTitle{\midaligned{#2}}
> %% The above line is what I use. You want Roman numerals so maybe adapt it
> to:
> %% \define[2]\placePartTitle{\midaligned{\convertnumber[Romannumerals][#1]
> #2}}
>
> \definehead [Part] [part]
> \setuphead[Part]
>  [ page=right,
>    placehead=yes,
>    style={\stylePartTitle}, %% this is just from a \definefont
>    before={\setups{PartSetup}},
>    command=\placePartTitle,
>  ]
>
> With \setuplayout[location=doublesided] this then comes out on the RHS.
>
> For the ToC, I use:
>
> \setuplist [alternative=b]
> \setuplist [Part]
>  [ headnumber=no,
>    margin=0cm,
>    width=0cm,
>    distance=0cm,
>    style=\tocStylePartTitle,
>  ]
> \setuplist [Chapter]
>  [ headnumber=no,
>    margin=1em,
>    width=0cm,
>    distance=0cm,
>  ]
> \setupcombinedlist [content] [list={Part,Chapter}]
>
> then \placecontent prints the chapter titles indented under each part.
>
> HTH
> —
> Bruce Horrocks
> Hampshire, UK
>
>
>
> —
> Bruce Horrocks
> Hampshire, UK
>
>
> ___________________________________________________________________________________
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> the Wiki!
>
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>
> ___________________________________________________________________________________
>


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