9.3 Input Radio
Setting the value of the attribute type to radio allows visitors to select one or more options using "radio buttons" from a limited number of choices. For example:
<form> <input type="radio" name="sex" value="male"> Male <br /> <input type="radio" name="sex" value="female"> Female </form>
This would look like this in a browser (try clicking the buttons):
Here we have also used the value attribute. This attribute would provide the information as to which choice was taken by a visitor, and for example could be passed upon processing of the form to an email address.