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[Giovanni Piredda <address@hidden>]

I realized one does not need to use Scheme:

<assign|separator|<line|<point|0par|0par>|<point|1par|0par>>>

On 12.02.21 15:02, Giovanni Piredda wrote:
> Waiting that someone else gives a better answer, you can use this 
> function
>
> (lambda ()(stree->tree '(line (point "0par" "0par") (point "1par" 
> "0par"))))
>
> which you can conveniently put in an extern macro and assign to a 
> "separator" macro:
>
> <assign|separator|<extern|(lambda ()(stree-\<gtr\>tree '(line (point 
> "0par"
> "0par") (point "1par" "0par"))))>>
>
> G.
>
>
> On 12.02.21 14:53, Frank wrote:
> > Dear all,
> >
> > I wonder how to insert an horizontal separator. For example, when I 
> > prepare a set of problems, I want to put a separator so that the 
> > exercises in each group are closely related.
> >
> > Best,
> > Frank