DEBUGLOG
This specifies a location for the debug log output from the vendor daemon associated with this options file. Preceding the debug log path with a plus sign (+) character appends logging entries; otherwise, the file is overwritten each time the daemon is started. Note that this affects output from only the vendor daemon associated with this options file.
DEBUGLOG [+]debug_log_path
Example:
DEBUGLOG +C:\temp\lmgrd.log
2/20/2013