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Update Logging.md

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@ -14,6 +14,8 @@ HomeSpan log messages are typically output directly to the Arduino Serial Monito
You can set the *Log Level* in your sketch using the method `homeSpan.setLogLevel(uint8_t level)` as described in the [HomeSpan API Reference](API.md). Level 0 messages are always output; Level 1 messages are only output if the *Log Level* is set to 1 or greater; and Level 2 messages are only output if the *Log Level* is set to to 2. The *Log Level* can also be changed dynamically via the Serial Monitor at any time by typing either the 'L0', 'L1', or 'L2' as described in the [HomeSpan CLI](CLI.md).
You can also completely disable all Serial output messages generated by HomeSpan by setting the *Log Level* to -1, either by typing 'L-1' into the HomeSpan CLI or by calling `homeSpan.setLogLevel(-1)` in your sketch. Disabling all Serial output may be useful in cases where a separate Serial peripheral is being controlled by the ESP32. In such cases you may want to implement a physical switch on your device that automatically sets the Log Level to 0 or -1 so you don't have to recompile your sketch every time you want to enable/disable HomeSpan Log Messages.
## User-Defined Log Messages
You can add your own log messages to any sketch using HomeSpan's **LOG0()**, **LOG1()**, and **LOG2()** macros. Messages created with these macros will be output to the Arduino Serial Monitor according the *Log Level* setting described above. Each **LOGn()** macro (where n=\[0,2\]) is available in two flavors depending on the number of arguments specified: