Currently when a moderator edits someone's post, there is no way to tell the user or anyone else why the post was edited unless another post is made. Whilst sometimes this may be desirable, at other times it isn't necessary yet it would still be nice to let users know why the edit took place. I would like to propose that an optional 'reason for edit' post box is added to the edit screen for a moderator. They can then choose to give a reason for the edit. With this in place, any edits that don't justify a full post follow-up can be given a short reason if desired.