Add a radio box for region selection. The TEXT statement specifies text for the dialog box that appears on line 1 and begins in column 1. The RADIOBOX statement specifies that a radio box will appear in the dialog box. DEFAULT= specifies that the first radio button (Northeast) will be selected by default. The RBUTTON statements specify the mutually exclusive choices for the radio buttons: Northeast, Northwest, Southeast, or Southwest. SUBSTITUTE= gives the value that is substituted for the %1 in the DIALOG statement above if that radio button is selected.

          text #1 @1 'Choose a region:';
          radiobox default=1;
             rbutton #3 @5 'Northeast' substitute='NE';
             rbutton #4 @5 'Northwest' substitute='NW';
             rbutton #5 @5 'Southeast' substitute='SE';
             rbutton #6 @5 'Southwest' substitute='SW';