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my @headings = (
                [key => 'k', name => 'Kanji', class => 'kanji' ],
...
                [key => 'co', name => 'Suggestion', class => 'skip-cod
+e'],
                [key => 'disc', name => 'Discussion'],
               );

my @headings =
  (
...
    key => 'disc', name => 'Discussion'
   },
  );