A message appeared in my Inbox informing me that . . . a notice had been attached to one of my accepted answers. The notice seems to me a comment from a moderator, but as far as I can tell the author is anonymous (I could not read the notice/comment on the mobile App, I had to login using a browser to display the full contents).
I searched through the Help, as well as the Biology Meta posts but could not find any description of these notices.
Is this mechanism documented anywhere? In particular is there a way for me to respond/reply?