Let developers include data that cannot be seen or modified by users when a form is submittedWhile the value isn't displayed to the user in the page's content, it is visible—and can be edited—using any browser's developer tools or "View Source" functionality. Do not rely on hidden inputs as a form of security.
Whatever you want to hide goes in the value attribute. Such a:
name:value
value:this is a secret note
One of the most common ways I use this in Webflow is to pass a CMS id or a Page URL so I know where a user was when they submitted a form.