Discussion
Interesting, Damus doesn’t seem to have that yet 
I'm not sure how effective it is with older notes, but twice I have been able to withdraw notes immediately after posting them when I saw a glaring mistake.
Everything online is practically permanent so I'm developing a more consistent proof reading practice 🙂
"replace" is function is the way here.
replace your note by a black hole img like this
addendum: some say they can see black holes