Talk:Master of the Heavenly Yard/@comment-216.226.127.180-20180301154847/@comment-2602:301:77AD:9270:8953:671F:DD9B:A902-20180301160936

I think it's just a visual trope mothy was using (to type in information and then backspace it to make room for more typing). I think it's common enough that it probably doesn't mean anything.