my $rg = $b_frame->RadiobuttonGroup(-list => [qw( stuff)])->pack();

##</code><code>##

$rg->{'SubWidget'}->{'stuff'}->configure(-background => 'pink');

##</code><code>##

DESCRIPTION
   Displays a set of related radiobuttones with a frame in vertical or hori-
   zontal orientation.

   All radiobuttones are advertised with the names given in the -list
   option.

   Any additional options which are given to this widget are applied to all
   of the radiobuttons it manages.