+my $call = $self->call;
+my $ref;
+return (1, $self->msg('e5')) unless $self->priv >= 5;
+foreach $ref (DXChannel::get_all()) {
+ $ref->send_now("D", DXProt::pc39($main::mycall, "Shutdown by $call")) if $ref->is_node && $ref != $DXProt::me;
+ $ref->send_now("D", $self->msg('shutting')) if $ref->is_user;