Replying to an individual, instead of a list (was: Unsubscribe)

NB 
<https://docs.freebsd.org/en/articles/freebsd-questions/#_how_to_answer_a_question> 
point 11,

> … If you just want to reply to a message because of its bad format, 
> just reply to the submitter, not to the list. …
(You can think of incorrect addressing as comparable to incorrect 
formatting.)

Thanks