$_ = [ord $_] for values %{$xorg};
$xorg->{$_}->[2] = # class = compatibility
$di->{$_} ? $di->{$_}->[0] != $xorg->{$_}->[0] ? 'l1' : # conflict
$_ = [ord $_] for values %{$xorg};
$xorg->{$_}->[2] = # class = compatibility
$di->{$_} ? $di->{$_}->[0] != $xorg->{$_}->[0] ? 'l1' : # conflict