What is the edit button.
*“Button?”
It takes your posted comment back to reply screen so that you can corect thai-pose... that is if you care about being de purfect spellar usin well englezz.
Oh, and include “Edit: blah blah blah...” to add extra comments without having to quote your old comment to keep the train of thought going. It’s the equivalent of “P.S.” in a letter.
I hope this helps you out.