@ramin_hal9001@emacs.ch thanks for the polite answer!

Regarding the grammar, that obviously is not the main point of the discussion, I disagree.

If you are correct, it should be something like

"Note that the `anon` users are able to become `root` without password by default, as a development convenience.

To prevent this, remove `anon` users from the `wheel group and they will no longer be able to run `/bin/su".

But from a technical point of view `anon` is a user in Linux, not a group of objects. So probably I would use "it", instead of "he/they", because it can be seen as a "role", and not as a person:

"To prevent this, remove `anon` user from the `wheel group` and it will no longer be able to run `/bin/su`.

@louis@emacs.ch