As a user I want to be able to overwrite the derived column widths of a table (like with the LaTeX kill command).
Suggested is the following command (partition) in the example context:
Some text.
\partition=10%,,70%
| Foo | Bar | Baz |
|:------|:-----|:------|
...
For now (in version 2023.2.12) we went with
\columns=