def format_printable(word)
      if @word_size == 1
        PRINTABLE[word]
      elsif (RUBY_VERSION > '1.9.' && (word >= -2 && word <= 0x7fffffff))
        begin
          word.chr(Encoding::UTF_8)
        rescue RangeError
          UNPRINTABLE
        end
      else
        UNPRINTABLE
      end
    end
def format_printable(word)
      if @word_size == 1
        PRINTABLE[word]
      elsif (RUBY_VERSION > '1.9.' && (word >= -2 && word <= 0x7fffffff))
        begin
          word.chr(Encoding::UTF_8)
        rescue RangeError
          UNPRINTABLE
        end
      else
        UNPRINTABLE
      end
    end
Converts a word into a printable String.

 @param [Integer] word
   The word to convert.

 @return [String]
   The printable representation of the word.

 @since 0.2.0