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|divisortheory||Hi, i would like to make a suggestion. Next to each lecture, it would be nice to be able to put a little checkmark indicating to myself that I have already watched this lecture. Unless you follow lessons in a very strict sequence, it is very easy to lose track of which ones you've already watched, and which ones are still new.|
|Guo Juan||Good idea, thanks! It is on our to-do list.|
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