# RadioButton

### Group Name

* The Group Name binds different radio buttons controls. All radio buttons with the same group name will interact. E.G. switching one on will switch others of the same group off.

### Unique Value

* Each radio button within a group must have a unique value.

### Default setting for button group

* One button within a group can be marked as the default value. This will set the button initially to on.

### Example

*We could define radio buttons for colors. The group name could be "color" and we can set up different buttons with unique values like "red", "blue", "green", ...*