In this Flash ActionScript 3.0 tutorial and source file we demonstrate how to program your Radio Button component. The RadioButton component allows you to force a user to make a single selection from a set of choices. This component should be used in a group of at least two. The user can only select one item from the group. If one item is selected and the user clicks to select another, the first item will be unselected and the selection will be set for the last radiobutton pressed. The radioButton component in flash is ideal for gathering form data or creating tests and quiz applications.