I have added a comment field to a content type. It is of the default comment type.

I don't want my commenters to fill in a subject, rather, just a comment body.

Trying to remove the Subject field, I went to `admin/structure/comment/manage/comment/fields` but there I only find `comment_body`, not something like `comment_subject`. 

How to remove or hide the Subject field for comments?<br>
In former phrasing, how to not require a subject from commenters?