);
my $groups = do 'keyboard/altgr/groups.inc.pl';
+$groups->{def}{''}{$_} = 'g4' for split //,'weEriIoOa/*'; # lookalikes
$groups->{def}{''}{$_} .= ' ext' for keys %dyalogx;
$groups->{flag}{ext} = ['extended', 'optional operators not available in all variants'];