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Program 3

  (inputs word) ; HTML input.  Will be null if no such input.
  (define newword
    (if (null? word)
  Type a word: <input name="word">
  <input type="Submit">
  <p>[newword] spelled backwards is
     [(list->string (reverse (string->list newword)))]
  <p>This message brought to you by [(cgi SERVER_NAME)] as a public