my $twig = new XML::Twig(
                TwigHandlers => {
                    'byline' => \&byline,
                    'body.head/hedline' => \&hedline,
                    'body.content/p' => \&process_p,
                    'body.content/hl2' => \&process_body_hl2,
                    'body.content/block/p' => \&process_p,
                    'body.content/block/hl2' => \&process_body_hl2,
                    'body.content/table' => \&process_table,
etc. etc.