Description:
    This batch file attempts to verify that the level L serial port diagnostic commands
    can be executed.
   
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    Clear the Expected Batch File Errors.
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    -*9                                 All Level '*' Command: Special Batch File Function - Clear Expected Errors
   
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    Enable error logging and clear the error log.
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    -/LE1                               Level L 'E' Command: Enable / Disable Logging
    -/LiFFFC                            Level L 'i' Command: Initialize Log File
   
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    Display the help information for the Level L commands.
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    -/CQL                               Level C 'Q' Command: Display ASCII Command Information
   
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    Change to Command Level L.
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    -/L                                 All Level '/' Command: Change Diagnostic Command Level
   
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    Test the Log file commands by creating Error Log File 4, initializing it to be empty,
    displaying its information, displaying its contents, copying Log File 0 to Log File 4
    and deleting log file 4.
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    -?                                  Online '?' Command: Display Diagnostic Buffer Information
    -c4,0,0,200                         'c' Command: Create Log File 4
    -?                                  Online '?' Command: Display Diagnostic Buffer Information
    -i4                                 'i' Command: Initialize Log File 4
    -I4                                 'I' Command: Display Log File 4 Information
    -D4                                 'D' Command: Display Log File 4
    -C0,4                               'C' Command: Copy Log File
    -d4                                 'd' Command: Delete Log File 4
    -?                                  Online '?' Command: Display Diagnostic Buffer Information
   
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    Display the Active Error Log and check if the Batch File failed.
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    -*B                                 All Level '*' Command: Special Batch File Function - Display Log
    -|                                  '|' Command: Batch File Terminator