1  extern char letters[26+1];
       2  char letter;
       3  int letter_number;
       4  char letters[] = "AbCdefghiJklmNopQrStuVwXyZ";
       5  
       6  static void
       7  pad_home1 ()
       8  {
       9    letter = letters[letter_number =
      10  		   letters[letter_number + 1] ? letter_number +
      11  		   1 : 0];
      12  }
      13