Feature Request: Flagging problems

[hassannajj]

The feature that I would like to implement is flagged problems. This would be very similar to how you can "complete" a problem and it would be highlighted green. Except when flagging a problem, it will be highlighted light yellow and it will not count as complete. Also the icon for flagging a problem would be a flag icon next to the check mark icon.

This would be for any problems that you still need time practicing later, but you would like to move on to other questions for the time being.

There could also be the ability to view all flagged problems on the left panel, directly under the "topics" section, with a jump link that will slide you directly to the problem on the same page.

I created an preview of how this would looked in the UI:

[KeenanBrab]

+1 for this, the ability to flag a problem and possibly even writing a small note for yourself. I was personally doing this in a spread sheet, having it built into website would be clutch!