You can also consider using viewerlayer:
\setupinteraction[state=start]
\defineviewerlayer[solution]
\setupcolors[state=start]
\usecolors[xwi]
\definecolor[keyColor][1.0(maroon)]
\starttext
\startitemize[n]
\but[ToggleLayer{solution}]
\samplefile{tufte}
\blank[big]
\startviewerlayer[solution]
\keyColor
\samplefile{knuth}
\stopviewerlayer
\stopitemize
\stoptext
I print the file with the solution layer off to a 'clean' file for students.
Gavin via ntg-context <ntg-context@ntg.nl> 於 2022年1月12日 週三 下午11:30寫道：
> Thanks Fabrice and Aditya!
>
> With three completely different approaches, I learned three times more
> than I was expecting. This has been a great help. I will probably use the
> framedtext method, but I learned something from each.
>
> Gavin
>
>
> > On Jan 11, 2022, at 4:44 PM, Aditya Mahajan <adit...@umich.edu> wrote:
> >
> > On Tue, 11 Jan 2022, Gavin via ntg-context wrote:
> >
> >> Hello List,
> >>
> >> I am making problem sets for a physics class. Solutions use the style
> defined in the example below, and only appear if the “solution” mode is
> enabled. I am struggling to get a vertical space for the solution which is
> the same whether or not the solution is printed. Different problems require
> different amounts of space, so this should be an argument or key-value.
> >
> > This is how I would do it: piggyback on framedtext. Note that framedtext
> doesn't break across pages. So, if you have long answers, a different
> mechanism is needed.
> >
> > \definemode[solution][no]
> >
> > \doifmodeelse{solution}
> > {\defineframedtext[solution][empty=no]}
> > {\defineframedtext[solution][empty=yes]}
> >
> > % Doesn't work. Why?
> > %
> \expanded{\defineframedtext[solution][empty=\doifmodeelse{solution}{no}{yes}]}
> >
> > \setupframedtext
> > [solution]
> > [
> > spacebefore=medium,
> > spaceafter=medium,
> > width=broad,
> > foregroundstyle=\rm\it,
> > loffset=2em,
> > roffset=2em,
> > indentnext=no,
> > ]
> >
> >
> > \starttext
> >
> > Sample question. Always show answer.
> >
> > \startsolution[height=1in, empty=no]
> > Alotta wood!
> > \stopsolution
> >
> >
> > How much wood?
> >
> > \startsolution[height=1in]
> > Alotta wood!
> > \stopsolution
> >
> > You don't need to specify the height:
> >
> > \startsolution
> > \input ward
> > \stopsolution
> >
> > No more questions.
> > \stoptext
>
>
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>
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>
> ___________________________________________________________________________________
>
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maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
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