A radio button group is a set of mutually exclusive items, each representing a different choice. The items are displayed as a group on a data form. Each item is associated with a single character that displays the selection status of the associated item (ON or OFF). For PCDOS and OS/2 systems, the default ON character is a large dot (hex value 07); for terminal based systems, the default ON character is an asterisk (hex value 2A). The default OFF character is a space (hex value 20). Selecting one radio button automatically deselects all other radio buttons in the group.
Some example radio button groups are shown below. The first example uses the default PCDOS and OS/2 radio button characters. The second example uses the default terminal radio button characters.
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