RadioButtons Commands
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 Creating a RadioButton Menu   @ <nRow>, <nCol> RADIO [ <oRadMenu> VAR ] <nVar> ;
 from source code                 [ PROMPT <cItems,...> ] ;
                                  [ OF | WINDOW | DIALOG <oWnd> ] ;
                                  [ HELPID | HELP ID <nHelpId> ] ;
                                  [ ON CLICK | ON CHANGE <uChange> ]


 Creating a RadioButton Menu   REDEFINE RADIO [ <oRadMenu> VAR ] <nVar> ;
 from resources                   [ ID <nId,...> ] ;
                                  [ OF | WINDOW | DIALOG <oWnd> ] ;
                                  [ HELPID | HELP ID <nHelpId> ] ;
                                  [ ON CLICK | ON CHANGE <uChange> ]

 <nRow>, <nCol>         The coordinates of the RadioButton Menu. We simulate
                        text coordinates.

 <oRadMenu>             A reference to the RadMenu Object.

 <nVar>                 The numeric variable wich controls the RadioButton
                        Menu.

 <cItems>               A list of strings defining the prompts to be used
                        as radio elements.

 <oWnd>                 A reference to the container Window of the Radio
                        Button Menu.

 <nHelpId>              The help identifier for this control.

 <uChange>              An action to be performed when a new radio is
                        selected at the RadioButton Menu.