I agree with the way you handled the question and answer problems - putting in a TN that they are just simple numbers and letters followed by a period in braille makes perfect sense. As for the Step It Out arrows - are the arrows necessary? I assume every Step It Out is preceded by the heading - so it is pretty clear that's what it is. You could just put in the number and NOT follow it by a period - and put that in the TN. Or enclose those numbers in parentheses. This would use more "familiar" symbols. The way you chose certainly isn't wrong as BF does not directly address this issue that frequently occurs in print. Choose a way and then be consistent. The reader will understand. What a challenge you have!