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RXTX (not for jLog V5 or newer)

jLog V 4.x communicates with serial devices through the RXTX library available from
RXTX consists of two parts: The Java extension library RXTXcomm.jar and the native serial driver to be integrated with the operating system. 
RXTX must be installed after having installed the Java Runtime Environment (JRE) and before installing the jLog application.

Please note that you must install RXTX as a user with Administrator ("root") privileges.