On Tue, 10 Nov 2020 at 16:00, Pablo Rodriguez <oinos@gmx.es> wrote:

> On 11/10/20 9:55 AM, Sylvain Hubert wrote:
> > Dear List,
> >
> > In the following example, the section title appears at the very end of
> > the first page.
> > [...]
> > Does anyone know where to adjust the penalty in this case, so that the
> > section title can be repositioned to the next page?
>
> Hi Sylvain,
>
>   \setuphead[title]
>     [before={\blank[preference, big],
>      after={\blank[samepage, big]]
>
> In this case, the blank space before sets a preference for inserting a
> page break. The blank space after requires to be in the same page with
> next paragraph.
>
> Of course, you don’t need both simultaneously.
>
> Just in case it helps,
>
> Pablo
>

Hello Pablo,

Thank you very much for the help. The penalty of \blank indeed brings the
solution closer and it does format the previous example correctly.

However, when I went back to the original document, neither
[before={\blank[preference, big]}] nor [after={\blank[samepage, big]}] nor
both worked. I trimmed it into the following example which behaves the same:

    \starttext
    \showframe
    \dorecurse{50}{a }
    \startsection[title=spec][before={\blank[preference,big]},
after={\blank[samepage,big]}]
    \startxtable
    \startxrow
    \startxcell[ny=30]a\stopxcell\startxcell 1\stopxcell
    \stopxrow
    \dorecurse{29}{\startxrow\startxcell 2\stopxcell\stopxrow}
    \stopxtable
    \stoptext

Do you have an idea on how this could also be formatted correctly or how
one could inspect and debug the penalty?

Thanks again!

Sylvain