btw if you like, you can add a time stamp to your youtube links by adding '&t=' and the minutes and seconds, e.g. &t=29m46s : https://www.youtube.com/watch?v=iUzJX9rCMRw&list=PLofKYC6TXgl1xzFZA9y3ouPvLaeBPp3J-&index=20&t=29m46s