I recently asked a question about the beginning of a proof in a book.
Artudo Magidin helped me greatly, but it took me 2 days until I understood the answer and could accept it. Now I have another question about the end of the same proof. I left it as a comment there. Will he notice it? What is the appropriate thing to do to make him or someone else notice this new comment which is in some way a follow up question?
(I can post it as a new question, but since it's about the same proof, I'm not sure if this is the appropriate thing to do on math.stackexchange).