new_contents: # This program emulates a tic-tac-toe board
  theBoard = {'top-L': ' ', 'top-M': ' ', 'top-R': ' ',
              'mid-L': ' ', 'mid-M': ' ', 'mid-R': ' ',
              'low-L': ' ', 'low-M': ' ', 'low-R': ' '}
  
subject: Initialize P04_ticTacToe