Listbox items can be modified by a number of steps. They are- at first listbox or radio button is selected in the form builder and then go at the right where element settings is available and click on the button of item picker.Then it is important to change the default items by adding and removing procedure.
Placing the URL in the browser address text box will open to make a form. Those who are planning to send someone a link to the form choose the option of url.
Reference - http://www.formlogix.com/makeaform/make-a-form-on-the-web.htm
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