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Captcha
If checked, a captcha is displayed logo appears when the user clicks form is loaded. When users click Submit on the form, no further action is necessary. This is to prevent Spam submissions and the form can only be submitted upon successful completion of the captcha.
provides many more properties and settings. You can learn about most of these simply by experimenting in the Form Designer and the properties are also detailed in the Editing Form Properties chapter of the documentation.
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