Ok, have tried it now. No change ...

Am Sa., 17. Aug. 2019 um 13:33 Uhr schrieb Denis Maier <maier.de@gmail.com>:

> Also, what about \setupcolumnsetlines[Two][2][1][9]?
>
> Denis Maier <maier.de@gmail.com> schrieb am Sa., 17. Aug. 2019, 13:32:
>
>> If I am remembering correctly, the documentation has \setupcolumnsetlines
>> before \starttext.
>>
>> Sytse Knypstra <sytse.knypstra@home.nl> schrieb am Sa., 17. Aug. 2019,
>> 12:59:
>>
>>> In an effort to balance columns in a columnset layout, I found that in
>>> the following minimal example this effect is not obtained.
>>> After commenting out the first three lines after \starttext the result
>>> is ok.
>>> I am wondering what I overlooked this time.
>>>
>>> \definecolumnset[Two][n=2]
>>> \starttext
>>>    \startcolumnset[Two]
>>>       \input knuth
>>>    \stopcolumnset
>>>    \page
>>>    \setupcolumnsetlines[Two][1][1][9]
>>>    \startcolumnset[Two]
>>>       \input knuth
>>>    \stopcolumnset
>>> \stoptext
>>>
>>> Thank you for your suggestions,
>>>
>>> Sytse Knypstra
>>>
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>>