[NTG-context] \hideframe to cancel \showframe

[Mikael Sundqvist]

On Tue, Jun 30, 2020 at 11:47 PM Wolfgang Schuster <
wolfgang.schuster.lists at gmail.com> wrote:

> Mikael Sundqvist schrieb am 30.06.2020 um 22:03:
> > Hi,
> >
> > say that I, for educational purposes, want to use \showframe for a
> > couple of pages, and then want to hide the frames. What is the correct
> > way of doing this? I have for now added a \begingroup and \endgroup, but
> > then another document parameter that is set inside is cancelled after
> > the \endgroup.
> >
> > I tried to look in the source, but could not find anything that worked
> > (what I tried with was to use \setupbackgrounds[state=stop], but that
> > was merely a guess, and it did not work).
>
> There is no command to disable \showframe but you don't even need the
> command to have frames. What \showframe does is to set a few values for
> the \setupbackgrounds command which can be done by hand.
>
> To make everything a bit nice I put the backgrounds setup in a
> setup-block and call only these blocks in the document.
>
> %%%% begin example
> \startsetups[showframe]
>    \setupbackgrounds [header,text,footer] [leftmargin,text,rightmargin]
> [frame=on]
> \stopsetups
>
> \startsetups[hideframe]
>    \setupbackgrounds [header,text,footer] [leftmargin,text,rightmargin]
> [frame=off]
> \stopsetups
>
> \starttext
>
> \input knuth
>
> \page \setup[showframe]
>
> \input knuth
>
> \page \setup[hideframe]
>
> \input knuth
>
> \stoptext
> %%%% end example
>
> Wolfgang
>
>
 Many thanks, Wolfgang! This is exactly what I was looking for.

/Mikael
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