When using the preview function you will experience a text box underneath the question page. In order to control the live questionnaire, you can type in your comments which will be saved inside the question page.
While working inside the questionnaire you will find all the comments of all the previews (Even from different people)
In the project overview you will also see the comments added to your questions.
An extra Link to make your preview accessible to people without a questfox login will follow after some testing of this new feature.