# This script will extract text which is incuded in <b>
use strict;
use HTML::Parser;

local $/;
my $html = <DATA>;

my $p = HTML::Parser->new(api_version => 3,
  start_h     => [\&b_start_handler,"tagname,self"]
  );
  
$p->parse($html);

sub b_start_handler {
  my ($tagname,$self) = @_;
  return unless $tagname eq 'b';
  $self->handler(text  => [], '@{dtext}' );
  $self->handler(end  => \&b_end_handler,"tagname,self");
}

sub b_end_handler {
  my($tag,$self) = @_;
    my $text = join("", @{$self->handler("text")});
    print "$text\n---\n";

    $self->handler("text", undef);
    $self->handler("start", \&b_start_handler);
    $self->handler("end", undef);
}
__DATA__
<P class=para><a name="watch dog"></a><b>watch dog
-</b> A big dog that makes sure that you don't do anything that you're
not supposed to).</p>

<p class=para><a name="WR"></a><b>wooden round –</b> A big piece of ro
und wood.</p>