old_contents: DEBUG = True
  
  DATABASE_PATH = '/tmp/test.db'
  DATABASE_URL = 'sqlite:///{}'.format(DATABASE_PATH)
  
  PRINT_COMMAND = 'echo'
  
  MAX_CONTENT_LENGTH = 128 * 1024 * 1024 # 128 MB
  UPLOAD_FOLDER = './uploads'
  ALLOWED_EXTENSIONS = set(['txt', 'pdf', 'png', 'jpg', 'jpeg'])
  
  SECRET_KEY = 'Sm9o3iBfY2hyb20ga2ljatMgYXNz'
  
new_contents: # DEBUG = True
  
  DATABASE_PATH = '/tmp/test.db'
  DATABASE_URL = 'sqlite:///{}'.format(DATABASE_PATH)
  
  PRINT_COMMAND = 'lpr'
  
  MAX_CONTENT_LENGTH = 128 * 1024 * 1024 # 128 MB
  UPLOAD_FOLDER = './uploads'
  ALLOWED_EXTENSIONS = set(['txt', 'pdf', 'png', 'jpg', 'jpeg'])
  
  SECRET_KEY = 'Sm9o3iBfY2hyb20ga2ljatMgYXNz'
  
subject: Change default print command