>> The first thing that springs to mind here is "where on the line is
>> point placed?". At the beginning, end, same column as when
>> duplicate-line was invoked? (I know I could just read the code, but
>> the caffeine hasnʼt kicked in yet :-))
>
> This is a NEWS entry, it doesn't have to provide such details.  The
> doc string should, so if these details are missing from the doc
> string, it should be improved to include them.

Now the docstring is updated: