my $slist = Gtk2::Ex::Simple::List->new (
    'Setting'       => 'bool',
    'Configuration' => 'int',
    'Name'          => 'text',
    'Description'   => 'text',
);

@{$slist->{data}} = (
    [ 0,   1, 'Configuration 1',       'Description' ],
    [ 0,   2, 'Another Configuration', 'Another Description' ],
    [ 0, 102, 'Third configuration',   'Third description' ],
);