For better performance and to avoid some security problems consider installing this tool as a stand-alone application. rcsDesign.jar. Generally a command such as java -jar rcsDesign.jar will work but you may need to consult the documentation for your java interpreter. You may also obtain the full RCS java archive from the ISD FTP server, ftp://ftp.isd.mel.nist.gov/pub/emc/rcslib