anchor.diff:  # These are only used if logging_collector is on:
   log_directory = 'pg_log'		# directory where log files are written,
   					# can be absolute or relative to PGDATA
  -log_filename = 'postgresql-%a.log'	# log file name pattern,
  +log_filename = 'postgresql-%d.log'	# log file name pattern,
   					# can include strftime() escapes
   #log_file_mode = 0600			# creation mode for log files,
   					# begin with 0 to use octal notation
  
positive.code: 
  # - Checkpoints -
  
  #checkpoint_segments = 3		# in logfile segments, min 1, 16MB each
  #checkpoint_timeout = 5min		# range 30s-1h
  #checkpoint_completion_target = 0.5	# checkpoint target duration, 0.0 - 1.0
  #checkpoint_warning = 30s		# 0 disables
  
  # - Archiving -
  
  #archive_mode = off		# allows archiving to be done
  				# (change requires restart)
  #archive_command = ''		# command to use to archive a logfile segment
  				# placeholders: %p = path of file to archive
  				#               %f = file name only
  				# e.g. 'test ! -f /mnt/server/archivedir/%f && cp %p /mnt/server/archivedir/%f'
  
negative.code: #log_duration = off
  #log_error_verbosity = default		# terse, default, or verbose messages
  #log_hostname = off
  log_line_prefix = '[%t] %u/%d %p: '			# special values:
  					#   %a = application name
  					#   %u = user name
  					#   %d = database name
  