Option buttons
Option buttons represent a group of mutually exclusive options. You can select only one button at a time. If you already have one option selected, your current selection replaces it. The selected option button contains a black dot. Names of unavailable options appear dimmed.
Example of option buttons:
To select an option button:
If the option has an underlined letter, you can select the option button by pressing and holding down Alt while typing the underlined letter.