How do I create a welcome text or closing text in the survey?

When creating a survey, at the 'Details' step you will see the 'Welcome message' button to enable a welcome message. 

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After you press the button, a text field will pop up.

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By setting the welcome text, you generate an additional page that acts as a cover page for the survey, so to speak:

 

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The closing text, on the other hand, is enabled by default and appears as the last page of the survey with the following text: "Thank you! Your feedback has been submitted."Screenshot 2021-03-15 at 10.58.03

You can now also customize this text via the 'Details' interface.