Denis Maier schrieb am 17.08.2019 um 17:49:
> Ok.
> With this I don't get the empty page. But the setupcolumnsetlines has 
> still no effecgt for the second environment.
>
> ===
>
> \definecolumnset[One][n=2]
>
> \setupcolumnsetlines[One][1][1][9]
>
> \definecolumnset[Two][n=2]
>
> \setupcolumnsetlines[Two][1][1][5]
>
> \starttext
>
> \startcolumnset[One]
>
> \input knuth
>
> \stopcolumnset
>
> \startcolumnset[Two]
>
> \input knuth
>
> \stopcolumnset
>
> \stoptext
>

The settings for the second columnset work when the first columnset goes 
over of two or more pages.

Wolfgang