What are Definition Pop-ups?

Within the Description field in your Question Editor, you can add pop-up definitions by placing the thing being defined in [square brackets], then placing the definition within <angle brackets>. Example is provided in the image below

When respondents take the survey, per the example above, they will see the word 'Human' in the description section underneath the question and can click on the question mark icon to retrieve the definition you provided for that word.