You can edit it and clear all as long as its not up to 7 days but you can only delete on the first 2 minutes of posting
Welcome to steemit
You can join this discord channel to be taught how to go about how to succeed on steemit and learn business,poetry,art,crypto and get motivated,taught how to make good posts and comment
https://discord.gg/WaeJXmE
Join the discord channel today and learn something in the academy of life