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Add delay for a hint. That way, instead of trying to use hints to write the answers, learners will be quietly encouraged to try to solve the problem themselves.
This adds a shorter delay (15 seconds) for each hint. If the user has seen a hint and hasn't changed anything, they can re-see the hint.
We earlier added a delay for "give up". This modifies the give up timer so that if they've asked for a hint, the give up timer starts from the time of the last hint. That way, people can give up, but they have to at least wait a little time.