I had some extra questions after reading this part of the documentation, so perhaps an addition is needed. Or perhaps it is explained elsewhere.

- The section [ctl], so without any condition, does it apply always? Or does the "empty condition" part not apply when one of the parts *with* a condition applies?

- Related to the above: does the order matter? I can imagine multiple conditions matching (`[ctl:windows]` and `[ctl:python3]`), with their sections building upon each other.

- With some combination of answers to the above two questions, the example might actually be wrong: the "empty" `[ctl]` would always overwrite the suffix when order matters.