$VAR1 = {
          '__PACKAGE__' => {
                             '__FILE__' => {
                                             '__LINE__' => 'Mu Mu'
                                           }
                           }
        };

##</code><code>##

$hash{+__PACKAGE__}{__FILE__}{__LINE__} = "Mu Mu";

##</code><code>##

$VAR1 = {
          'Illumination' => {
                              '__FILE__' => {
                                              '__LINE__' => 'Mu Mu'
                                            }
                            }
        };