Radio buttons allow users to select only one alternative from a group. Radio buttons are presented in a list, one of which is selected by default. Clicking a new button clears the previously selected item.
To add a radio button:
Click on the form where you want to insert the radio button.
From the Insert menu, select Form Element - Radio Button. The check box appears on your form.
Double-click the check box to open the Radio Button & Check Box dialog.
In Control type, select Radio button.
In Control identifier, type the name that you want to associate with the radio button. The name you assign is not displayed on the form. Rather, it is used by the CGI program to sort the data collected from the form. If you want to include a label next to the radio button, type the text in the WYSIWYG Editor.
In Control value, enter the value that you want to assign to the radio button. The value identifies data sent to the server. The CGI script reads the value in order to perform an action on the data.
Select This control is initially selected if you want the check box to be a default selection when the topic is first opened in the viewer.
Click OK.