When you create test questions, you have the option of setting up hints, answer explanations, or reviewer notes to assist your Learners or Reviewers.

Answer Hints
​An answer hint will give the user a hint BEFORE they complete the question. This will appear as a light bulb on the question itself, revealing itself on hover.
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Answer Explanation
​Provide contextual explanations for Learners to better understand the correct answer for a question - whether they answer it correctly or incorrectly. To set when the Learner sees the explanation, go to your Guide Test Settings.
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Reviewer Notes
​Review notes are applicable for managers, editors, or admins who are reviewing content. These notes will not be visible for standard Learners.