You might want to learn more about the main tasks a candidate tackled in previous jobs. The "Key Achievements" question lets you do just that! Reference givers answer this question with text so that they can tell everything you need to know.

• This is how the key contributions question looks like for the reference giver
• This is how the key contributions question looks like for the candidate

If you are looking for a more structured answering format have a look at the skill question!