copied form the original site http://ftp.cs.stanford.edu/pub/sgb/.
Version is from http://ftp.cs.stanford.edu/pub/sgb/sgb-2021-02-02.tar.gz.
copied form the original site http://ftp.cs.stanford.edu/pub/sgb/.
Version is from http://ftp.cs.stanford.edu/pub/sgb/sgb-2021-02-02.tar.gz.