Board Thread:Requests for User Rights/@comment-25529931-20150829224006/@comment-26528161-20150830092608

Could someone explain to me what's a mainspace edit? My vote on another thread was disqualified because I didn't have enough of these... plus, what does rollback mean? And what about the others? Like forum moderator or something ( I know this isn't the right place to talk about this, so if you don't want to reply, I understand).