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#Logging
You can turn on the logging by setting the system property purejavacomm.loglevel to a value in the range 0-7.
purejavacomm.loglevel
Turning on the logging will cause PureJavaComm to output progress information to the console.
The default level is 0 at which nothing is output.
Increasing numbers produce progressively more information.
At level 1 only critical information is output, at level 5 every operating system call and return values are logged.
At level 7 logging info includes the class and line number where is each system call happens.