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  1. or download this
    #!/usr/bin/perl
use warnings;
use strict;
...
});

print $tree->as_HTML;
  2. or download this
    <html>
 <head>
 </head>
...
  <p>Of course x != 3 &amp; x != 5 &mdash; That goes without saying.
 </body>
</html>