Digital Signature Field: Allows the user to electronically sign a PDF document with a digital signature.Action buttons are different from radio buttons, which represent data choices made by the user. These buttons can be customized with images, text, and visual changes triggered by mouse actions. Button: Initiates a change on the user’s computer, such as opening a file, playing a sound, or submitting data to a web server.Combo Box: Allows the user either choose an item from a pop-up menu or type in a value.
List boxes have a field property that lets the user Shift-click or Control-click to select multiple items on the list. All radio buttons with the same name work together as a group. If the form contains multiple check boxes, the user can typically select as many or few of these as needed.