Button annotations are check boxes, radio buttons and regular buttons. Buttons can have actions atached to them. Actions are most appropriate for regular buttons. They are executed when the button is clicked (e.g. go to "next page", or "print").
Radio buttons and check boxes have a
Selected Value. For
radio buttons to work correctly as a group, they need to have the same
field name, but a unique
Selected Value. This will ensure only
a single radio button can be selected within a group.