Quote
logfile = filename
Default value: empty.
Name of the log file. Delete this line, if you want to use the syslog for logging. You can use "1" to write to the console (stdout).

This setting can be overridden by the -l (ell) command line argument.

should be
Quote
logfile = filename
Default value: empty.
Name of the log file. Delete this line or use "syslog" or "0" value, if you want to use the syslog for logging. You can use "1" to write to the console (stdout).

This setting can be overridden by the -l (ell) command line argument.

By default, it isn't clear how to force syslog logging with command line.