$writer->startTag('doc', 'version' => '1.0',
                           'status' => 'draft',
                           'topic' => 'AT&T');


##</code><code>##

{
my $nest = XML::Writer::Nest->(tag => 'level1');
  { $nest->nest(newlevel => [attr1 => 1, attr2 => 2]);
     ...
  }
}

##</code><code>##

{
my $nest = XML::Writer::Nest->(tag => 'level1');
  { $nest->nest(newlevel , attr1 => 1, attr2 => 2);
     ...
  }
}