Am 02.11.2013 um 21:54 schrieb Francisco Gracia <fgragu...@gmail.com>:
> There is plenty of information available about how to deal with issues
> related to chapter openings (*headings*) in *Context* but I have not found
> any related to document endings.
>
> I would like to end the chapters of a book with some small decorative
> element, be it text or graphics; let us call it a *Fleuron*. Just putting it
> in the last line of the text file to be typeset, one can take for sure that
> earlier or later it will end appearing as the only element of the last page
> of the product of some run. To avoid this undesirable outcome, it seems to me
> that one is forced to provide some help to *Context* via some text marks or
> some code, but I have not been able to conjecture what they should be.
>
> The clearest arrangement would seem to be the inclusion at the end of the
> source document of some *Context* instructions equivalent to the following
> pseudocode:
>
> if *Fleuron* fits into the current page:
> typeset *Fleuron*
>
> But how do I formulate the condition? How do I know what is the *current
> page*, what is the size that *Context* has calculated for *Fleuron* and what
> is the amount of space remaining in the page?
>
> One can imagine that this method could even be helpful in other situations of
> the typesetting operation not related to the last page.
>
> Does someone know how to handle it?
You can use leaders to place a box with the symbols/ornament because the
disappear when they are placed at the begin of a page.
\def\Fleuron
{\par
\leaders\vbox to \lineheight{MIDDLE OF THE PAGE}\vfil}
\setuplayout[lines=10]
\starttext
% Method 1
\dorecurse{5}{Line \recurselevel\par}
\Fleuron
\page
\dorecurse{10}{Line \recurselevel\par}
\Fleuron
\page
\dorecurse{5}{Line \recurselevel\par}
\Fleuron
\stoptext
Wolfgang
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