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%title = ( value => 'Welcome to my website!',
           char_ct => 22,
...
              word_ct => 5,
              repeat_ct => 2 );
etc...

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%tags = ( title    => { value => 'Welcome to my website!',
                        char_ct => 22,
...
                        char_ct => 31,
                        word_ct => 5,
                        repeat_ct => 2 } );

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$title{value} = 'Welcome to my website!';

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$tags{title}{value} = 'Welcome to my website!';

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( $num_chars, $num_words ) = count_chars_words( $tags{title} );

...
    my $value = ${ $hashref }{value};
    # count stuff and return
}

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$tags{keywords}{val_list} = [ ( split( ', ', $tags{keywords}{value} ) 
+) ];
print ${ $tags{keywords}{val_list} }[2]; # pop